8 × 10⁻⁶ J work is required to move a +20 mC point charge from the negative plate to the positive plate if the plate separation is 0.050 m.
The work required to move a point charge in an electric field is given by the formula W = qEd, where q is the charge, E is the electric field strength, and d is the distance over which the charge is moved.
In this case, the charge is +20 mC, the electric field strength is 8 V/m, and the distance over which the charge is moved is the plate separation of 0.050 m.
So, W = (20 × 10^-3 C) × (8 V/m) × (0.050 m) = 8 × 10^-6 J
Therefore, the answer is (E) 8 × 10^-6 J.
To calculate the work required to move a point charge in a uniform electric field, we can use the following formula:
Work = q * E * d * cos(θ)
where:
q = charge (20 mC or 20 × 10⁻⁶ C)
E = electric field (8 V/m)
d = plate separation (0.050 m)
θ = angle between the electric field direction and the displacement direction (0°, since the point charge is moving parallel to the electric field)
Plugging in the values, we get:
Work = (20 × 10⁻⁶ C) * (8 V/m) * (0.050 m) * cos(0°)
Work = (20 × 10⁻⁶ C) * (8 V/m) * (0.050 m) * 1
Work = 8 × 10⁻⁶ J
Therefore, the correct answer is E) 8 × 10⁻⁶ J.
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use thermal energy in a sentence.
Answer:
please mark brainliest!
Explanation:
here are a few examples-
- The heat gives off subtle infrared rays which produce thermal energy to heat the floor.
- In the space of only a few nanoseconds, a great deal of magnetic energy is converted into the thermal energy of the plasma.
- Although there have been some changes in the thermal energy in the park since 1871, there has been no appreciable diminution.
- Hence a part of what must be included in thermal energy is not simply proportional to temperature as is commonly assumed.
hope this helps !
Why do your legs appear shorter when standing in water
A ball of mass 50 g moving with a velocity 50 m/s comes to rest due to friction. What is the final momentum of the ball?
a)2500 Kg m/s b)Zero
c)2.5 Kg m/s. c)2500g m/s
The final momentum of the ball of mass 50 g moving with a velocity 50 m/s after coming to rest due to friction is zero.
p = m v
p = Momentum
m = Mass
v = Velocity
m = 50 g
v = 0 ( After rest due to friction )
p = 50 * 0
p = 0
Momentum is called as mass in motion. If there is no motion on the object there could be no momentum. Its unit is Kg m / s.
Therefore, the final momentum of the ball is zero ( b )
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if the separation between lines l1 and l5 is 200 hz and is due to a chemical shift, what will be the separation in a 220- mhz spectrometer? express your answer to three significant figures and include the appropriate units.
The separation between lines l1 and l5 in chemical shift a 220-MHz spectrometer will be 2.2 kHz.
The chemical shift between lines l1 and l5 is given as 200 Hz. We know that the chemical shift is independent of the spectrometer frequency. Therefore, the same chemical shift will be observed in a 220-MHz spectrometer. However, the separation between the lines will be proportional to the spectrometer frequency. The ratio of the separation to the frequency is constant, and this ratio is known as the chemical shift in ppm (parts per million).
Therefore, we can use the chemical shift in ppm to calculate the separation at a different frequency.
The chemical shift in ppm is given as:
Chemical shift (ppm) = (separation between lines in Hz / spectrometer frequency in MHz) * 10^6
Plugging in the values, we get:
0.001 = (200 / f) * 10^6
Solving for f, we get:
f = 200 / 0.001 / 10^6
f = 200 / 1000
f = 0.2 MHz
Therefore, the chemical shift in ppm is 0.001, and the separation between the lines in a 220-MHz spectrometer will be:
Separation = 0.001 * 220 * 10^6
Separation = 220,000 Hz
Expressing the answer to three significant figures and converting Hz to kHz, we get:
Separation = 2.20 kHz
The separation between lines l1 and l5 in a 220-MHz spectrometer will be 2.2 kHz.
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how long does it take a car to come to a complete stop if it is going 30 m/s and can accelerate at a rate of -6 m/s²?
Answer: t=10s
Explanation:
v=u+at
⟹0=30+(−3)×t
⟹0=30−3t
⟹3t=30
⟹t=303
⟹t=10s.
a question about the size of the universe
Answer: The Universe has no scale, no matter and no size it is an infinite void of never-ending wonder.
Explanation:
what is the iv and the DV in a rocket
an independent variable (IV) that you can change. • Typical IV's might be number of fins, length of rocket, type of material, mass of the rocket. • Choose one dependent variable (DV) and make three launches per DV for each IV for a total of. six launches..
Explanation:
what type of service does time safari, inc. provide?
Answer:
Explanation:
“The Sound of Thunder” is set in the year 2055. Time Safari, Inc. offers time-travel opportunities to hunt and kill exotic and now-extinct animals. In the hunt described in the story, the team of two guides and three hunters goes back to prehistoric days in order to kill the largest dinosaur of them all, a Tyrannosaurus rex. The business has already put safety precautions into place so that these trips can be made without unduly impacting the future. The animals that are killed are ones that have already been identified as doomed. For example, the T rex in question was going to be killed by a falling tree anyway. The safari leaders also built a path for visitors to step on so that no element of the past setting is tampered with. Even the slightest misstep could have implications for the future.
A ball is thrown vertically upward from the edge of a bridge 24.0 m high with an initial speed of 13.0 m/s. The ball falls all the way down and strikes the water below. Determine the time it takes the ball to strike the water.
The time it takes for the ball to strike the water is approximately 3.9 seconds.
To solve this problem, we can use the equation of motion for vertical displacement, which is given by:
y = y0 + v0t + (1/2)at²
where y is the final vertical displacement, y0 is the initial vertical displacement, v0 is the initial vertical velocity, a is the acceleration due to gravity, and t is the time.
In this case, we have:
y = 0 (since the ball strikes the water)y0 = 24.0 m (the height of the bridge)v0 = 13.0 m/s (the initial speed of the ball)a = -9.8 m/s^2 (the acceleration due to gravity)Plugging these values into the equation and rearranging for t, we get:
0 = 24.0 + 13.0t + (1/2)(-9.8)t²
0 = -4.9t² + 13.0t + 24.0
Using the quadratic formula, we can solve for t:
t = (-13.0 ± √(13.0² - 4(-4.9)(24.0)))/(2(-4.9))
t = (-13.0 ± √(169 + 470.4))/(-9.8)
t = (-13.0 ± √639.4)/(-9.8)
t = (-13.0 ± 25.3)/(-9.8)
The two possible solutions for t are:
t = (-13.0 + 25.3)/(-9.8) ≈ -1.3 s (this solution is not physically possible)
t = (-13.0 - 25.3)/(-9.8) ≈ 3.9 s (this is the correct solution)
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12 A car travels in a straight line at speed v along a horizontal road. The car moves
against a resistive force F given by the equation
F = 400+kv²
where F is in newtons, v in ms-1 and k is a constant.
At speed v = 15ms-1, the resistive force F is 1100 N.
a
Calculate, for this car:
i the power necessary to maintain the speed of 15ms-¹,
ii the total resistive force at a speed of 30 ms-¹,
iii the power required to maintain the speed of 30ms-¹.
Answer:
i) Power = Force * Velocity = 1100 * 15 = 16500 W = 16.5 kW(ii) Find the value of k first: F = 400 + k(15^2) k = 28/9 F = 400 +(28/9)(30^2) = 320
Explanation:
5) the platter in a belt drive turntable is driven by a belt that wraps around a hub, of radius 3.00 cm, below the platter and around the shaft of the motor. if the platter rotates at 33.3 rpm and the motor rotates at 60 rpm, what is the required radius of the shaft?
The required radius of the shaft is 1.66 cm.
A radius of a circle or sphere is any of the road segments from its middle to its perimeter, and in greater current usage, it's also their duration. The name comes from the Latin radius, which means ray however also observed as a chariot wheel.
The radius of a circle is the gap from the middle of the circle to any factor on its circumference. it's also denoted via 'R' or 'r'.while the radius of a circle runs from its center to its facet, the diameter runs from aspect to aspect and cuts thru the middle. A circle's diameter basically splits the shape in half.
Calculation:-
w = v/r
W₁/w₂ = r₂/r₁
r₂ = (w₁/w₂) × r₁
= (33.3/60) × 3
= 1.66 cm
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in general, gases such as carbon dioxide make up such a small amount of the atmosphere that they aren't really important to climate and weather.
Gases such as carbon dioxide (CO2) play a crucial role in climate and weather patterns.Carbon dioxide, along with other greenhouse gases like methane and water vapor, helps trap heat in the Earth's atmosphere, leading to the greenhouse effect.
This effect is essential for maintaining a habitable temperature on Earth. Without greenhouse gases, the planet would be too cold to support life.
However, the increased concentration of greenhouse gases, primarily due to human activities like burning fossil fuels, has led to an enhanced greenhouse effect, resulting in global warming. The rise in CO2 levels has been directly linked to the increase in average global temperatures and climate change.
Moreover, changes in CO2 levels can affect weather patterns and climate systems. The absorption and release of heat by the atmosphere, influenced by greenhouse gases, contribute to the formation of weather systems such as storms, precipitation patterns, and wind patterns.
Therefore, gases like carbon dioxide are indeed important factors in climate and weather, and their concentrations and effects are subjects of significant scientific study and concern.
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what is the meaning of life?
Answer:
Life means to exist' in general
2. A pitcher threw a baseball straight up at 39 meters per second. What
was the ball's velocity after 2.50 seconds?
act.
Which conclusion is best supported by the information
in the chart?
y (m/s)
The object has negative displacement.
O The object has negative acceleration.
The object does not have displacement.
The object is not accelerating.
Answer:the object does not have displacement
Explanation:
13. Which one of the colors has the longest wavelength A, Red B. Yellow C. Blue 14. The sky appears blue due to A. Diffraction of light C. Refraction of light B. Reflection of light D. Scattering of light
13.The color with the longest wavelength is option A. Red.
14.The sky appears blue due to option D. Scattering of light.
Red light has a longer wavelength compared to yellow and blue light.The color that has the longest wavelength is red. The color of the sky appears blue due to scattering of light. The distance between one peak and the next in a series of waves, particularly electromagnetic waves traveling through space or along a wire is referred to as wavelength.
The wavelength of light, for example, determines its color. Red light has the longest wavelength, followed by orange, yellow, green, blue, and purple, with violet light having the shortest wavelength. When light is reflected off a surface or passes through a medium, it can be deflected in various directions, a phenomenon known as scattering of light.
The Earth's atmosphere scatters sunlight in all directions, but the shorter blue wavelengths are scattered more than the longer wavelengths. As a result, we perceive the sky as blue during the day. The light becomes scattered when it interacts with particles in the atmosphere, causing the sky to appear blue during the day and red during sunset or sunrise. The scattering of light is the process that causes the sky to appear blue.
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Bob can run the 100 meter dash in 25 seconds. What is his speed?
Answer:
4 meters a second
Explanation:
100/25
plzz mark brainiest
an increase in sound level from 30 db to 50 db requires an increase in sound intensity by a factor of:
Loudness increases by 10 dB for every dB increase in sound intensity. A 40-decibel light rainstorm is 100 times louder than a whisper, whereas a 30-decibel "silent" room is 10 times louder than a 20-decibel whisper. Loud noises can be harmful.
50 dB is how much louder than 20 dB?A 10 dB rise results in a two-fold increase in volume. The loudness will therefore rise by nearly 8 times with a 30 dB increase (from 20 dB to 50 dB).
Decibels are measured on a logarithmic scale using a power of ten, which might be perplexing. For those of you without advanced math degrees, this simply implies that the sound intensity doubles for every 10 decibel rise.
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If it took .4 s for the tomato to hit Juan’s head, what was the distance between he position where the tomato was released and Juan’s head?
Answer:
vjad zdmenrmdnbeanssshsnaaamrnrnealatkujejdshdendddddjnyejeynarnDhdndndddnN\nnddzNHNdnnkddkddzmdddhmeeenNDN
Answer:....
Explanation:.....
When you drop a 0.36 kg apple, Earth exerts
a force on it that accelerates it at 9.8 m/s2
toward the earth’s surface. According to Newton’s third law, the apple must exert an equal
but opposite force on Earth.
If the mass of the earth 5.98 × 1024 kg, what
is the magnitude of the earth’s acceleration
toward the apple?
Answer in units of m/s2
The magnitude of the earth’s acceleration toward the apple is -9.8m/s^2.
What is gravity?The term gravity refers to the attractive force that acts towards the center of the earth. We know that force is a vector quantity hence it has both magnitude and direction. Given this fact, the acceleration that this force produces also must have a magnitude and a direction.
In this case, we have been told that the a force on it that accelerates the apple at 9.8 m/s2 toward the earth’s surface. Recall that according to Newton's third law, the apple does exert a force that is equal in magnitude to the force of gravity.
The acceleration that is produced by the force is of the same magnitude but in opposite direction to that produced by gravity. Thus, the magnitude of the earth’s acceleration toward the apple is -9.8m/s^2.
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Un ladrillo de 2kg que se encuentra a 200º c, se sumerge en 5 kg de agua a 32º¿a que temperatura se alcanza el equilibrio térmico?
Answer:
El equilibrio térmico se alcanzará a los 152ºC.
Explanation:
Dado que un ladrillo de 2kg que se encuentra a 200º c, se sumerge en 5 kg de agua a 32º, para determinar a qué temperatura se alcanza el equilibrio térmico se debe realizar el siguiente cálculo:
2+5 = 7
(200 x 5 + 32 x 2) / 7 = X
1064 / 7 = X
152 = X
Por lo tanto, el equilibrio térmico se alcanzará a los 152ºC.
What would happen if you didn't have chemical energy in your body? Choose the best answer.
A You wouldn't be able to think.
B You wouldn't be able to move.
C You wouldn't be able to sleep.
D You wouldn't be able to sit.
ill give a thanks
Answer:B
Explanation:
Because chemical energy fuels your body with energy so without it u wont have enough energy to move.
A bullet leaves a rifle with a muzzle velocity of 521 m/s. While accelerating through the barrel of the rifle, the bullet moves a distend of 0.840 m. Determine the acceleration of the bullet (assume a uniform acceleration)
Determine the moment at point b using method of section if w=40.3lb/ft Answer:
Method of section is a significant method of determining forces in members of a structure.
The basic concept of the method of section is to find out the forces acting on the sections by separating them from the rest of the structure.
In this problem, the moment at point b has to be determined using the method of section.
The given weight of the beam is
w = 40.3 lb/ft.
Let's draw the free-body diagram for the given beam:
Free-Body Diagram:
As we can see from the above diagram, the section has been drawn which passes through point b.
We have to determine the moment at point b using this section.
Now, we will write the equation for the moment of the section passing through point b as:
- 12(6) - 4(8) - (20)(12) - (32)(20) - (40.3)(12/2) = 0Mb = 1126.05 lb-ft
the moment at point b is 1126.05 lb-ft.
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Question 5 of 10
What happens when a loop of wire turns between two permanent magnets in
a generator?
A. A current flows through the loop of wire.
O B. Electrical energy transforms into mechanical energy.
O C. A current flows through the permanent magnets.
D. Mechanical energy transforms into electromagnetic radiation.
Answer:
B. Electrical energy transforms into mechanical energy.
Explanation:
In the case when the wire loop transforms between the two permanent magnets in a generator so here the electrical energy turns to mechanical energy as there is a working principle behind the generator that the electrical energy would turns into mechanical energy
Therefore as per the given scenario, the option b is correct
And, the rest of the options are wrong
Three small identical spheres A, B, and C, which can slide on a horizontal, frictionless surface, are attached to three strings of length l which are tied to a ring G. Initially the spheres rotate clockwise about the ring which moves along the x axis with a velocity v0. Suddenly the ring breaks and the three spheres move freely in the xy plane. Knowing that vA = (1.039 m/s)j, vC = (1.800 m/s) i, a = 416 mm, and d = 240 mm, determine (a) the initial velocity of the ring, (b) the length l of the strings, (c) the rate in rad/s at which the spheres were rotating about G. Please explain each step.
(a) The initial velocity of the ring can be determined by taking the vector sum of the individual velocities of the spheres:
v0 = -(vA + vC)
Given that vA = (1.039 m/s)j and vC = (1.800 m/s)i, the initial velocity of the ring can be calculated.
(b) The length of the strings, l, can be determined using the distance formula between the spheres A and C:
d = sqrt((l^2 + l^2) - 2l*l*cos(120°))
Given that d = 240 mm, the length l can be calculated.
(c) The rate in rad/s at which the spheres were rotating about G can be calculated using the formula:
ω = vA / r
where ω is the angular velocity and r is the distance between the center of sphere A and the center of the ring G.
Given that a = 416 mm, the angular velocity can be calculated using the known values.
Note: The calculations involving vectors, trigonometry, and unit conversions are not provided here, but they can be performed using the given information and appropriate mathematical operations.
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A wave travels an average distance of 6 meters in 3 seconds. What is the wave's velocity?
Answer:
2m/s
.................
An athlete from your school's cross country team goes for a training
run. she runs 3.6 km east, 4.5 km north, then another 2.4 km east. at the
end of her run, how far is the athlete from her starting position?
(remember, you can rearrange the vectors to make a right triangle and
use pythagorean theorem).
2.4 km
4.5 km
- 3.6 km
The athlete is 7.5 km North east from the starting point.
Consider the athlete's starting point as A. After running 3.6 km east from A, consider the point as B. After running 4.5 km north from B, consider the point as C. After running 2.4 km from C, consider the point as D.So the distance from starting point to ending point is AD.Total distance travelled east is 3.6 + 2.4 = 6 kmTotal distance travelled east is 4.5 kmThis forms a right angled triangle, where AD is the hypotenuse and the distance travelled east and north are the other two sidesAccording to Pythagoras theorem,
\(AD^{2}\) = \(6^{2}\) + \(4.5^{2}\)
AD = √ 36 + 20.25
AD = √ 56.25
AD = 7.5 km
Therefore, the athlete is 7.5 km North east from the starting point.
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PLEASE HELP!!!!
What is intelligence?
the emotional abilities of an individual to learn from experience, and to cope effectively with the demands of daily living
the ability to score well on standardized tests,
the cognitive abilities of an individual to learn from experience to reason well, and to cope effectively with the demands of daily living,
how quickly an individual can reduce or eliminate stress
Answer:
the cognitive abilities of an individual to learn from experience to reason well, and to cope effectively with the demands of daily living
Explanation:
Yes that can be understood by a simple example
Suppose two people are in exam
A difficult and logical question cameThe person can use his cognitive abilities faster can solve that\(\large\longrightarrow \) Intelligence is the cognitive abilities of an individual to learn from experience to reason well, and to cope effectively with the demands of daily living.
Why is the plastic shopping bag transparent
Answer:
they are transparent to see the content of goods inside but at the same time what cause it to be transparent is because of the fact that they are created with low-density polyethylene and polypropylene, which are transparent polymers.