An Electric Field does 25 mJ of work to move a +7.4 μC charge from one point to another. What is the potential difference between these two points?
Answers
Answer:
P.d = 3.4 * 10^3 volts
Explanation:
Given the following data:
Workdone = 25mJ = 25*10^{6} Joules
Charge = 7.4 μC = 7.4 * 10^{3} C
To find the potential difference;
P.d = workdone/charge
Substituting into the equation, we have;
P.d = 25 * 10^6/7.4*10^3
P.d = 3.4 * 10^3 volts
Related Questions
A uniform capillary tube contains dry air enclosed by a mercury pellet at 27 °C The length of enclosed air is 30 cm. When the tube is immersed in a boiling liquid, the length of air column is increased by 10 cm. The boiling temperature of this liquid is..
Answers
Answer:
This temperature is equivalent to 87°C.
.
The electric potential difference between the ground and a cloud in a particular thunderstorm is 6.2×10 ∘
V. What is the magnitude of the change in the electric potential energy of an electron that moves between the ground and the cloud?
Answers
The magnitude of the change in electric potential energy of an electron that moves between the ground and the cloud is approximately 9.92 × 10^(-12) J (joules).
To calculate the change in electric potential energy of an electron moving between the ground and the cloud, we can use the equation:
ΔPE = q * ΔV
where ΔPE is the change in electric potential energy, q is the charge of the electron, and ΔV is the potential difference.
The charge of an electron is given as -1.6 × 10^(-19) C (coulombs), and the potential difference is 6.2 × 10^7 V (volts).
Plugging in these values into the equation, we have:
ΔPE = (-1.6 × 10^(-19) C) * (6.2 × 10^7 V)
= -9.92 × 10^(-12) J
Therefore, the magnitude of the change in electric potential energy of an electron that moves between the ground and the cloud is approximately 9.92 × 10^(-12) J (joules).
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Strontium, Sr, will
valence electrons when forming an ionic bond.
O lose 1
Olose 3
Olose 2
O gain 1
Answers
Answer:
lose 2
Explanation:
Sr is an alkali metal which forms 2+ ion.
an object applies force of 500n on the area if 10m². find the force exerted
Answers
Exerted force is called Pressure.
From,
Pressure = Force/Area
P = 500N/10m²
P = 50N/m²
The force exerted is 50N/m²
What is the connection to Canadian technology/development with the Kepler space telescope?
Answers
Answer:One of this country's most notable achievements will be spending Canada Day weekend marking its own milestone anniversary in a unique place, floating up in space.
After 10 years in the ether, several times farther from Earth than the International Space Station, it remains the world's smallest space telescope.
MOST was also Canada's first-ever space telescope when it was launched into space on June 30, 2003.
It has helped make Canada a leader in the field of micro satellites.
But Matthews is particularly enthused about all the other possibilities that might be opened up by the 60-kilogram MOST.
The colorful University of British Columbia astrophysicist firmly believes there is life outside our solar system.
"Certainly simple forms of life like microbial life is probably very common — and I hope complex life," Matthews said in a recent interview. "If it's out there, we're finding the places where it's most likely to live."
I have no Idea if this helps but hope it does.
one function of a cell wall
Answers
Answer:
The cell wall surrounds the plasma membrane of plant cells and provides tensile strength and protection against mechanical and osmotic stress. It also allows cells to develop turgor pressure, which is the pressure of the cell contents against the cell wall.
Steam flows through a nozzle at mass flow rate of
m =0.1 kg/s with a heat loss of 5 kW. The enthalpies at inlet and exit are 2500 kJ/kg and 2350 kJ/kg, respectively. Assuming negligible velocity at inlet (C 1 ≈0), the velocity (C2 ) of steam (in m/s) at the nozzle exit is (correct to two decimal places)
Answers
If negligible velocity at inlet (C 1 ≈0), the velocity (C2) of steam (in m/s) at the nozzle exit is 447.21 m/s.
According to question:
The steady flow energy equation for steady flow devices
m (h1 + ((c1)2/2) + z1g) + Q = m (h2 + ((c2)2/2) + z2g) + Wcv
C1 = 0
Wcv = 0
z1 = z2
mh1 + Q = mh2 + m((C2)2/2)
m((C2)2/2) = m(h1-h2) + Q
0.1 × ((C2)2/2) × 10-3 = 0.1(2500-2350) -5
C2 = 447.21 m/s
Thus, the negligible velocity at inlet (C 1 ≈0), the velocity (C2) of steam (in m/s) at the nozzle exit is 447.21 m/s.
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Four friends, a, b, c, and d are standing varying distances away from a speaker which is producing sound waves. an illustration of a point labeled speaker with concentric circles spreading out from it. every other circle is 1 more meter away from the source. 1 m is labeled a, 2 m is labeled b, 3 m is labeled c and 4 m is labeled d. which person will most likely hear the loudest sound? a b c d
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The answer is a. Because person A is closest to the speaker, so they will hear the loudest sound.
What is the frequency of the sound waves? The frequency of a sound wave is the number of complete wave cycles that occur in one second. It is measured in hertz (Hz), which is equal to one cycle per second. The frequency of sound waves is determined by the number of vibrations per second that the sound wave produces. A higher frequency sound wave has a higher pitch and a lower frequency sound wave has a lower pitch. For example, the frequency of a middle C note on a piano is approximately 262 Hz. This means that the sound wave produces 262 complete cycles per second. Generally, humans can hear sound frequencies between 20 Hz and 20,000 Hz.
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Answer:A
Explanation:
A is correct
What is the chemical formula of the molecules
Answers
Answer:
C2H5OH
Explanation:
. Check corbon number then hydrogen number then you have to see functional group.
provide 2 important pitching tips you can tell someone else. softball
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Tip 1 - throwing a fastball. Use two points to keep your arm properly aligned your biceps brush your ear at the top of the backswing, and your pitching hand brushes your hip at release.
Tip 2 - throwing a curveball. Pictures should know that in order to maximize your curves, you should visualize a series of dots from the mound to the outside corner of the plate. Pitch along those dots.
Tip 3 - throwing a fast pitch rise. It’s possible that your wrist snap may be sideways. Play with different grips or finger pressures and try to relax them.
Tip 4 - throwing a change-up. Don’t always throw the change-up in a given situation. Make sure to change your pitch selection.
Tip 5 - throwing a drop-ball. Keep your pitching arm close to your body to avoid injury.
Draw a circuit in series, 6 lamps, 3 electrical equipment, 1 power source, open
Answers
3 electrical equipments consider for this circuit diagram are,
1. Ammeter
2. Resistance
3. Resistance
The circuit diagram with 6 lamps and 3 electrical equipments and 1 power source with open circuit form is represented as,
Module 3 Discussion!
After reading Ch.12 and 13 of the text (The essentials of Finance and Accounting for nonfinancial managers/ Third Edition) on Strategy and Financial Forecasting, watching the SWOT video based on Paley’s Products from the Ratio Analysis in Module 2 and the additional narrative information in Appendix C, Phase
Create a SWOT analysis that will reflect the TOWS analysis as described in Ch. 12 of the text. The purpose of the SWOT analysis is to lay out several issues and possibilities to be considered in Paley’s strategic planning. The strengths and weaknesses are internal issues, whereas the opportunities and threats are external.
The second part of the analysis is to create actions based on the SWOTs. This is sometimes called a TOWS analysis and is done by comparing the boxes, two at a time:
Offensive actions come from strengths that link to opportunities, so a specific strength can be applied to exploit an opportunity.
Adjusting actions come from addressing weaknesses, which then can be used to exploit opportunities that previously had not been possible.
Turnaround actions come from weaknesses that link to threats. These are high-risk issues where a priority needs to be given to addressing the weakness to minimize the vulnerability.
Defensive actions come from threats that link to strengths. These are latent issues because if the threat materializes, an already-existing strength is available to counter it.
Additional actions can be included to address other issues not directly identified in the SWOTs.
3. From the actions identified in part 2, pick 3-5 strategic actions that you feel Paley must achieve or at least start in the upcoming year and state your reasons for including them.
Attach your completed SWOT form and list of strategic actions with supporting logic and facts from the case as your answer for this discussion question. These actions are the foundation for the strategic plan
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SWOT Analysis Strengths- Paley’s Products has a low overhead cost with the company operating at a high level of efficiency, resulting in competitive pricing.- They have a team of experienced employees who have worked in the industry for several years.- They have a variety of products in the portfolio that can satisfy customers from different sectors.- They are reputable and have a loyal customer base.Weaknesses- They have been slow to adopt new technology, and this may be a disadvantage to the company.- Limited marketing and sales promotion are affecting their sales revenue.-
They depend on a few key customers for the bulk of their sales revenue, leaving them vulnerable to market changes.Opportunities- Expansion of the product line to include unique products.- The establishment of strategic partnerships with other businesses in the industry.- Exploration of new markets, such as international markets.- Improvement of marketing techniques to increase brand awareness.Threats- Changes in consumer preferences towards environmentally friendly products.- Increase in competition from other businesses in the industry.- Fluctuating market prices for raw materials that may lead to price increases.
Strategic Actions to be taken by Paley Products1. Development of an E-commerce platform to allow online transactions with customers. The E-commerce platform will enable Paley to reach a wider customer base, expand its reach, and increase sales revenue.2. Investment in the research and development of new environmentally friendly products. Paley will remain competitive and cater to the needs of consumers who prefer green products.3. Establishment of strategic partnerships with other businesses in the industry to leverage the strength of other companies in the industry and to develop new products or increase market share.4. Improvement of marketing techniques to increase brand awareness and improve visibility. A marketing strategy that incorporates social media and other digital channels can help promote the brand to potential customers.5. Expansion into international markets. This will enable Paley to diversify its customer base and generate more revenue. Paley can start by targeting nearby countries, then expand globally as they gain more experience and financial stability.
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Define escape velocity.
Answers
Ede vech 7 bends aa ess krke 7 carbon aa jai Carbon de jada koi hor laga hove tah oh lekna Carbon de jagha
Explanation:
In celestial mechanics, escape velocity or escape speed is the minimum speed needed for a free, non-propelled object to escape from the gravitational influence of a primary body, thus reaching an infinite distance from it. It is typically stated as an ideal speed, ignoring atmospheric friction.
I hope you help :)
for a fixed amount of gas at a fixed temperature, what will happen if the volume is doubled? the pressure exerted by the gas will double. the pressure exerted by the gas will remain unchanged. the pressure exerted by the gas will halve. the pressure exerted by the gas will quadruple.
Answers
According to Boyle's law, which states that the pressure of a gas is inversely proportional to its volume at a constant temperature, if the volume of a fixed amount of gas is doubled, the pressure exerted by the gas will halve. option(1)
This means that the gas molecules will have more space to move around and will collide less frequently with the walls of the container, resulting in a decrease in pressure.
This relationship between pressure and volume is important in understanding the behavior of gases and is used in many applications, including the compression and expansion of gases in engines and refrigeration systems.
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Full Question : For a fixed amount of gas at a fixed temperature, what will happen if the volume is doubled?
the pressure exerted by the gas will double. the pressure exerted by the gas will remain unchanged.the pressure exerted by the gas will halve. the pressure exerted by the gas will quadruple6) a child with a weight of 470.0 n grabs onto the end of a rope whose length is 1.80 m. the child swings back and forth, as a pendulum. as the rope swings vertically, the speed of the child is 0.800 m/s. a) what is the acceleration of the child (magnitude and direction), at the moment when the rope is vertical? b) at the moment when the rope is vertical, what force does the rope exert on the child, in order to keep the child hanging onto the rope?
Answers
The acceleration of the child at the moment when the rope is vertical is 3.06 m/s2 (downward).b) At the moment when the rope is vertical, the force that the rope exerts on the child, in order to keep the child hanging onto the rope, is 157.92 N (upward).
Given data:
Weight of child, w = 470.0 N
Length of rope, l = 1.80 m
Speed of child, v = 0.800 m/s
Using the formula of Centripetal acceleration,
a = (v²/l)
Acceleration of child, a = (0.800 m/s)²/1.80 m= 0.35555556 m/s² (which is the magnitude of acceleration)
Since acceleration is directed towards the center of motion, therefore it will be downwards. i.e.
Acceleration of child = 0.35555556 m/s² (downward) = 3.06 m/s² (downward) [Approx.]
Force exerted by rope on child can be found using the formula:
F = ma
Where, m = Mass of child and a = Acceleration of child (which is downward)
F = 470.0 N × 3.06 m/s²F = 1,438.2 N (downward)
However, it is required to find force in upward direction, i.e. Force exerted by rope = 1,438.2 N (upward) ≈ 157.92 N (upward).
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how are electromagnets used in communication{plsssssssssssssssss pu!!! deadline na next week !!!!!}
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Radio works by transmitting and receiving electromagnetic waves. The radio signal is an electronic current moving back and forth very quickly. A transmitter radiates this field outward via an antenna; a receiver then picks up the field and translates it to the sounds heard through the radio
Answer:
radio work by transmitting and receiving electro magnetic waves.
Which option is an example of a pure substance?
A. The compound strontium oxide
B. Carbon atoms spread evenly throughout iron atoms
C. A vinegar and oil salad dressing
D. A disc of silicon with stones of germanium in it
Answers
A digital audio compact disc (CD) carries data along a continuous spiral track from the inner circumference of the disc to the outside edge. Each bit occupies 0.6 mm of the track. A CD player turns the disc to carry the track counterclockwise above a lens at a constant speed of 1.30 m/s. Find the required angular speed (a) at the beginning of the recording, where the spiral has a radius of 2.30 cm, and (b) at the end of the record-ing, where the spiral has a radius of 5.80 cm. (c) A full-length recording lasts for 74 min, 33 s. Find the average angular acceleration of the disc. (d) Assuming the acceleration is con-stant, find the total angular displacement of the disc as it plays. (e) Find the total length of the track.
Answers
(a) The required angular speed at the beginning of the recording is approximately 52.38 radians per second.
(b) The required angular speed at the end of the recording is approximately 20.95 radians per second.
(c) The average angular acceleration of the disc is approximately -0.000286 radians per second squared.
(d) Assuming constant acceleration, the total angular displacement of the disc as it plays is approximately -0.343 radians.
(e) The total length of the track is approximately 5.28 kilometers.
(a) To find the required angular speed at the beginning of the recording, we can use the relationship between linear speed, angular speed, and radius. The linear speed is given as 1.30 m/s, and the radius is 2.30 cm (or 0.023 m). The formula to relate these quantities is:
Linear Speed = Angular Speed * Radius
Solving for angular speed:
Angular Speed = Linear Speed / Radius
Plugging in the given values:
Angular Speed = 1.30 m/s / 0.023 m
Angular Speed ≈ 56.52 radians/second
Therefore, the required angular speed at the beginning of the recording is approximately 52.38 radians per second.
(b) Similarly, to find the required angular speed at the end of the recording, we use the same formula and plug in the linear speed of 1.30 m/s and the radius of 5.80 cm (or 0.058 m):
Angular Speed = 1.30 m/s / 0.058 m
Angular Speed ≈ 22.41 radians/second
Therefore, the required angular speed at the end of the recording is approximately 20.95 radians per second.
(c) To find the average angular acceleration, we can use the formula:
Average Angular Acceleration = (Final Angular Speed - Initial Angular Speed) / Time
The final angular speed is the angular speed at the end of the recording, which is approximately 20.95 radians per second. The initial angular speed is the angular speed at the beginning of the recording, which is approximately 52.38 radians per second. The time is given as 74 minutes and 33 seconds, which is equivalent to 4473 seconds.
Average Angular Acceleration = (20.95 radians/second - 52.38 radians/second) / 4473 seconds
Average Angular Acceleration ≈ -0.000286 radians/second squared
Therefore, the average angular acceleration of the disc is approximately -0.000286 radians per second squared.
(d) Assuming constant angular acceleration, we can use the formula to find the angular displacement:
Angular Displacement = Initial Angular Speed * Time + (1/2) * Average Angular Acceleration * Time^2
The initial angular speed is approximately 52.38 radians per second, and the average angular acceleration is approximately -0.000286 radians per second squared. The time is given as 74 minutes and 33 seconds, which is equivalent to 4473 seconds.
Angular Displacement = 52.38 radians/second * 4473 seconds + (1/2) * -0.000286 radians/second squared * (4473 seconds)^2
Angular Displacement ≈ -0.343 radians
Therefore, the total angular displacement of the disc as it plays is approximately -0.343 radians.
(e) To find the total length of the track, we need to calculate the arc length of each bit and sum them up. Each bit occupies 0.6 mm of the track, which is equivalent to 0.0006 m.
The total number of bits can be calculated by multiplying the circumference of the spiral track by the number of revolutions. The circumference is given by 2π times the average of the initial and final radii.
Circumference = 2π * (2.30 cm + 5.80 cm) / 2
Circumference ≈ 27.77 cm
Converting the circumference to meters:
Circumference = 27.77 cm * 0.01 m/cm
Circumference ≈ 0.2777 m
The number of revolutions can be calculated by dividing the track length by the length of each bit:
Number of Revolutions = Track Length / Length of Each Bit
Number of Revolutions = 0.2777 m / 0.0006 m
Number of Revolutions ≈ 462.83 revolutions
Finally, we can calculate the total length of the track:
Total Length of the Track = Number of Revolutions * Circumference
Total Length of the Track ≈ 462.83 revolutions * 0.2777 m/revolution
Total Length of the Track ≈ 128.53 m
Therefore, the total length of the track is approximately 5.28 kilometers (or 5280 meters).
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What does this same experiment tell you about light waves? Explain the evidence that supports your claim.
Answers
Answer:
Light wave is an EM wave that can only be seen by humans New questions in Physics Engineers at the Space Centre must determine the net force needed for a rockets engine to achieve an acceleration of 70 m/s2.
Explanation:
Keeping in mind Newton’s First Law of Motion, if a rock is thrown it should stay in motion at a constant velocity. Why doesn’t it do that?
Momentum acts as a force to change its behavior.
You didn’t throw it hard enough.
Gravity acts as a force to change its behavior.
It needs an external force and an internal force to stay in motion.
Answers
According to Newton's First Law of Motion, the answer is that it needs an external force and an internal force to stay in motion. While it is true that momentum can act as a force to change its behavior, this does not necessarily explain why the rock does not stay in motion at a constant velocity.
It involve understanding the various forces at play when an object is in motion. In this case, the rock is subject to both internal and external forces that affect its motion. Internal forces, such as friction between the molecules within the rock, can slow it down and eventually bring it to a stop. External forces, such as air resistance and gravity, can also impact its motion.
For example, if you throw the rock with enough force, it may initially maintain its velocity due to its momentum. However, as it travels through the air, air resistance will gradually slow it down until it eventually hits the ground. Similarly, the force of gravity will also affect the rock's motion, pulling it downward towards the earth's surface. As a result, the rock will not stay in motion at a constant velocity because it is subject to a variety of forces that can impact its movement.
In summary, the reason why a rock thrown does not stay in motion at a constant velocity is due to the presence of internal and external forces that act on it. While momentum can play a role in its behavior, it is not the sole factor that determines its motion
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a car is moving with a velocity of 25m/s for 15s. calculate the displacement of the car. The acceleration of the car over the 15s
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Explanation:
this might help you i think so
slader How much energy is required to move a 1040 kg object from the Earth's surface to an altitude four times the Earth's radius
Answers
Answer:
ΔU = 5.21 × 10^(10) J
Explanation:
We are given;
Mass of object; m = 1040 kg
To solve this, we will use the formula for potential energy which is;
U = -GMm/r
But we are told we want to move the object from the Earth's surface to an altitude four times the Earth's radius.
Thus;
ΔU = -GMm((1/r_f) - (1/r_i))
Where;
M is mass of earth = 5.98 × 10^(24) kg
r_f is final radius
r_i is initial radius
G is gravitational constant = 6.67 × 10^(-11) N.m²/kg²
Since, it's moving to altitude four times the Earth's radius, it means that;
r_i = R_e
r_f = R_e + 4R_e = 5R_e
Where R_e is radius of earth = 6371 × 10³ m
Thus;
ΔU = -6.67 × 10^(-11) × 5.98 × 10^(24)
× 1040((1/(5 × 6371 × 10³)) - (1/(6371 × 10³))
ΔU = 5.21 × 10^(10) J
how have bifocal spectacles impacted society today
Answers
Bifocal spectacles have had a significant impact on society today. They have improved the quality of life for those with presbyopia, increased safety in the workplace, advanced the field of optometry, and become a fashion accessory for many people
Bifocal spectacles, first invented by Benjamin Franklin, have had a significant impact on society today. They have allowed people with presbyopia to see both near and far objects without the need to switch between two different pairs of glasses. This convenience has improved the quality of life for many people, especially older adults who often have difficulty seeing close objects.
Bifocal spectacles have impacted society today in numerous ways. For one, they have improved the quality of life for those with presbyopia, a condition that affects the ability to focus on close objects. Bifocals allow individuals to read, use a computer, or do other close work without needing to switch glasses or take them off entirely. This convenience has allowed older adults to continue to work and participate in everyday activities with greater ease.
Another way that bifocals have impacted society is by improving safety. Many jobs require clear vision at both near and far distances, such as driving or working in construction. Bifocals make it easier for workers to perform these tasks safely and effectively. This is especially important in jobs that require split-second decisions or the ability to react quickly to changing conditions.
Bifocals have also had an impact on fashion. With a wide variety of frame styles and lens shapes available, bifocal glasses can be both functional and stylish. Many people use bifocals as an opportunity to express their personality or make a fashion statement. This has led to a greater acceptance of bifocals as a normal part of everyday life, rather than a sign of aging or poor eyesight.
In addition to these practical benefits, bifocals have also impacted society by advancing the field of optometry. The invention of bifocals by Benjamin Franklin in the 18th century paved the way for further innovation in eyewear, including trifocals, progressive lenses, and other types of multifocal lenses. Today, there are many different types of glasses available to meet the unique needs of each individual.
Bifocal spectacles have had a significant impact on society today. They have improved the quality of life for those with presbyopia, increased safety in the workplace, advanced the field of optometry, and become a fashion accessory for many people. With continued innovation in the field of eyewear, it is likely that bifocals will continue to play an important role in society for many years to come.
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A parallel-plate capacitor is charged by a battery and then the battery is removed and a dielectric of constant K is used to fill the gap between the plates. Inserting the dielectric changes the energy stored by a factor of
Answers
Answer:
Explanation:
Battery is removed so its charge stored becomes fixed .
Energy of capacitor E₁ = Q² / 2C
When dielectric is inserted , the capacity of the capacitor is increased to KC .
Charge on it still remains the same ie Q
So its new energy
E₂ = Q² / 2 KC
E₂ / E₁ = 1 / K
E₂ = E₁ / K
Change in energy
= E₂ - E₁
= E₁ / K - E₁
= E₁ [ (1 / K) - 1 ]
Factor by which energy is changed
= [ (1 / K) - 1 ] .
Consider two stars that we’ll call A and B. Both are the same distance from Earth. Star A is much smaller than star B, but it also has a much higher temperature. Which one do you think would appear brighter? Why?
Answers
Both stars A and B will have the same brightness to the earth because luminosity is dependent on the temperature and size where A is hotter but smaller and B is bigger but colder.
What makes a star brighter?There are several factors that determine the luminosity of a star namely, the size, temperature, distance and magnitude. The two main factors that determine luminosity of a star when the distance is the same are temperature and size.
When the temperature of a Star is higher than the other with equal distance from the earth the star is brighter than that with lower temperature. Also, when the size of a star is bigger, it possesses a higher surface area to absorb light and energy. This makes A and B as bright as the other.
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Jenny wants to determine if a new brand name washing detergent is better than her old detergent. She washes 10 dirty T-shirts with the new washing detergent. After washing, she thinks they are cleaner using the new detergent. What can she do to be sure the new washing detergent works better than the old detergent?
Answers
Jenny can:
1). Define what she means by "better".
2). Take 20 T-shirts, all sullied by a wide variety of types of dirt, soil, schmutz, grime, dust, soot, mud, filth, mire, sludge, slime, ooze, dross, waste, stains, crud, grunge, and yuck.
3). Close her eyes, and, by feel alone, select 10 T-shirts out of the 20.
4). Wash 10 shirts with her old detergent. Wash 10 other shirts with her new detergent. After washing, keep the two groups of shirts segregated in separate piles.
5). Invite 5 of her closest friends to her house for soda and chips.
After snacks, tell them she needs their opinions. Don't tell them anything about the detergents.
Put the two piles of T-shirts on a large table.
Tell them what "better" or "cleaner" means to her.
Let each friend feel, palpate, inspect, evaluate and examine the two piles, and the T-shirts in each pile, being careful not to mix the piles.
6). Finally, ask each friend which pile of shirts s/he thinks more closely meets Jenny's definition of "cleaner" or "better".
A projectile is fired vertically upward with an initial velocity of 190 m/s. Find the maximum height of the projectile
Answers
ANSWER
\(1841.84\text{ m}\)EXPLANATION
Parameteters given:
Initial velocity = 190 m/s
To find the maximum height, we apply the formula for the maximum height of a projectile:
\(H=\frac{u^2\sin ^2\theta}{2g}\)where u = initial velocity
θ = angle with the horizontal
g = acceleration due to gravity = 9.8 m/s²
From the question, the projectile is fired vertically upward. This means that the projectile will make a 90° angle with the horizontal.
Therefore, we have that the maximum height of the projectile is:
\(\begin{gathered} H=\frac{190^2\cdot\sin ^2(90)}{2\cdot9.8} \\ H=1841.84\text{ m} \end{gathered}\)Answer:
Height is equal to 1841.8367m
Explanation:
KE = GPE
Write out the formula
1/2(m)(v^2) = mgh
Fill it with the information you have
1/2(190^2) = (9.8)(h)
Solve
1/2(36100) = 9.8h
18050 = 9.8h
1841.83673 = h
Write the complete answer out
Maximum height is equal to 1841.8367m (meters)
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Which statement describes gravity?
There is no defined unit of measurement for gravity.
O Gravity is the force that pulls objects toward Earth's center.
Objects that have a small mass will have no gravitational pull.
Gravitational pull between two objects decreases as the mass of one increases.
Answers
Gravity is a fundamental, universal force that pulls objects toward Earth's center. It increases with mass and decreases with distance. Measured in Newtons, it affects all objects.
Gravity is the force that pulls objects towards Earth's center. Gravitational pull increases as the mass of one object increases, while it decreases as the distance between two objects increases. These statements describe gravity.Gravity is a fundamental force of nature, which means that it is always present. It holds planets and stars in their orbits around the sun, and it keeps objects on Earth's surface.Gravity is a universal force, meaning that it affects all objects in the universe. The gravitational pull between two objects is proportional to their masses and the distance between them.There is a defined unit of measurement for gravity known as Newtons. Newtons are used to measure the force of gravity acting on an object. Objects that have a small mass still have a gravitational pull, but it is weaker than objects with a larger mass.For more questions on Gravity
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The correct question would be as
Which statement describes gravity? Select three options. There is no defined unit of measurement for gravity.
Gravity is the force that pulls objects toward Earth’s center.
Objects that have a small mass will have no gravitational pull.
Gravitational pull between two objects increases as the mass of one increases.
Gravitational pull decreases when the distance between two objects increases
a 10 gram bullet with a velocity of 1000 m/sec strikes a 100 gram block of wood initially at rest. what is their combined velocity? can you work the problem using the principle of conservation of momentum? conservation of energy?
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To find the combined velocity of the 10-gram bullet and the 100-gram block of wood after the collision, we can use the principle of conservation of momentum. Conservation of momentum states that the total momentum before the collision is equal to the total momentum after the collision.
Step 1: Convert the masses to kilograms.
10 grams = 0.01 kg (bullet)
100 grams = 0.1 kg (block of wood)
Step 2: Calculate the initial momentum of the bullet and the block of wood.
Initial momentum of the bullet = mass x velocity = 0.01 kg x 1000 m/sec = 10 kg m/sec
Initial momentum of the block of wood = 0.1 kg x 0 m/sec = 0 kg m/sec (since it's initially at rest)
Step 3: Calculate the total initial momentum.
Total initial momentum = Initial momentum of the bullet + Initial momentum of the block of wood = 10 kg m/sec + 0 kg m/sec = 10 kg m/sec
Step 4: Apply the conservation of momentum.
Total initial momentum = Total final momentum
Let V be the combined velocity after the collision.
(0.01 kg + 0.1 kg) x V = 10 kg m/sec
Step 5: Solve for V.
V = 10 kg m/sec / (0.01 kg + 0.1 kg) = 10 kg m/sec / 0.11 kg = 90.91 m/sec
The combined velocity of the bullet and the block of wood after the collision is approximately 90.91 m/sec.
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(a) (i) What is the raw file size for a 320×240 12-bit thermal image? (ii) How does the file size compare to a typical file size for a commercial digital camera (for visible range)? Give two reasons for the difference.
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The raw file size for a 320x240 12-bit thermal image is 115,200 bytes. Thermal images have smaller raw file sizes than digital camera images because they have lower resolution and color depth, resulting in less data being stored.
(i) To calculate the raw file size for a 320x240 12-bit thermal image, we need to consider the number of pixels and the bit depth. Each pixel in a 12-bit image can have 2¹² (4096) possible values.
The total number of pixels in a 320x240 image is 76,800 (320 x 240). Multiplying this by the bit depth, we get:
76,800 pixels x 12 bits/pixel = 921,600 bits
To convert this to bytes, we divide by 8:
921,600 bits / 8 = 115,200 bytes
Therefore, the raw file size for a 320x240 12-bit thermal image is 115,200 bytes.
(ii) The file size of a thermal image compared to a typical commercial digital camera image for the visible range is generally smaller due to a couple of reasons:
1. Resolution: Thermal images typically have lower resolution compared to commercial digital camera images. The example given is a 320x240 image.
While commercial digital cameras often capture images with higher resolutions like 12 megapixels (e.g., 4000x3000 pixels). The higher-resolution images from digital cameras contain more data per image, resulting in larger file sizes.
2. Color Depth: Thermal images are often grayscale or have limited color palettes. They usually use a lower bit depth, such as 12 bits, to represent the temperature variations.
In contrast, commercial digital cameras capture images with higher color depth, such as 24 bits (8 bits per color channel), resulting in more information per pixel and larger file sizes.
In conclusion, the raw file size of a thermal image is generally smaller compared to a typical commercial digital camera image due to lower resolution and color depth, resulting in less data being stored for each image.
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