The absolute temperature is 393 K
How do you obtain the absolute temperature?Absolute temperature is a temperature scale that starts at absolute zero, which is the temperature at which all matter has zero thermal energy. The most commonly used absolute temperature scale is the Kelvin scale. The conversion from Celsius or Fahrenheit to Kelvin can be done using the following formulas:
Kelvin = Celsius + 273
Here we would have that;
T = 120° Celsius + 273 = 393 K
This is the absolute temperature that we seek.
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2. A ball is released from a vertical height of 20 cm. It rolls down a "perfectly
frictionless" ramp and up a similar ramp. What vertical height on the second
ramp will the ball reach before it starts to roll back down?
Answer:
20 cm
Explanation:
Given that a ball is released from a vertical height of 20 cm. It rolls down a "perfectly frictionless" ramp and up a similar ramp. What vertical height on the second ramp will the ball reach before it starts to roll back down?
Since it is perfectly frictionless, the Kinetic energy in which the ball is rolling will be equal to the potential energy at the edge of the ramp.
Therefore, the ball will reach 20 cm before it starts to roll back down.
student wishes to determine the average life-span of a household light bulb. She randomly collects 15 light bulbs. The issue that may arise from her survey is... The accuracy will be low. The standard error will be too low. The bias will be high The precision will be low.
To ensure that the survey is accurate, precise, and representative of the population, the sample must be selected randomly, and all biases must be reduced to a minimum.
The student's wish is to find the average life-span of a household light bulb, for which she has collected 15 random samples. In such a case, the main issue that may arise from her survey is that the bias will be high. In research, bias refers to a systematic error that occurs in the sampling process. When it comes to surveying, bias can occur in several ways, such as selection bias, measurement bias, or sampling bias. The bias may occur due to the student's non-random selection of the samples, leading to a high bias in the sample distribution.
Due to bias, the sample may not be a good representation of the entire population, making it impossible to generalize the findings from the sample to the population. Therefore, it is essential to ensure that the sample is selected randomly to reduce bias and ensure that the sample distribution is a good representation of the population. Additionally, the accuracy and precision of the survey may also be affected by the bias, making it difficult to derive meaningful conclusions from the data collected. In conclusion, the main issue that may arise from the survey is a high bias due to non-random sample selection.
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please help me i neeed help with all threeas soon as possible thank you
Answer:
4b: comets
5a: supercluster
5b: they just changed 4b's solar system for milky way. I think it is still comets. if not, then just say black holes.
An airplane from rest accelerates on a runway at 7.25 m/s² for 35 seconds until it finally takes off the ground. Solve the distance covered by the airplane.
G:
R:
E:
S:
A:
2.How long will it take for a car to travel from 37 m/s to 60 m/s that accelerates at 3.68m / s²
G:
R:
E:
S:
A::
It will take the car 6.25 seconds to travel from 37 m/s to 60 m/s with an acceleration of 3.68 m/s².
For the first question, we can use the equation:
distance = 0.5 x acceleration x time^2
We know the acceleration (7.25 m/s²) and the time (35 seconds), so we can plug those in:
distance = 0.5 x 7.25 m/s² x (35 s)^2
distance = 0.5 x 7.25 m/s² x 1225 s²
distance = 4448.125 meters
Therefore, the airplane covered a distance of 4448.125 meters before taking off the ground.
For the second question, we can use the equation:
final velocity = initial velocity + acceleration x time
We know the initial velocity (37 m/s), the final velocity (60 m/s), and the acceleration (3.68 m/s²), so we can rearrange the equation to solve for time:
time = (final velocity - initial velocity) / acceleration
time = (60 m/s - 37 m/s) / 3.68 m/s²
time = 6.25 seconds
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As you travel downhill, your vehicle needs less power to reach the bottom and your stopping _________ increases.
Answer: Distance
Explanation:
When driving, it is important for one to always use safety belt and obey traffic rules.
During a collision, it is vital to always adhere to safety belts and also use occupant protection systems in order to help reduce the impact that an be felt during a collision. As you travel downhill, your vehicle needs less power to reach the bottom and your stopping distance increase.
4 A magnet can exert a force of attraction or a force of repulsion on another magnet.
Which of these forces is a push and which is a pull?
please explain too thanks!
Answer:
Push -repulsion
Pull - attraction
Explanation:
When two magnets are brought together, a push happens when a force of repulsion is experienced where the magnets move away from each other. This means their polarity is the same and this will cause the magnet to push away from each other.
When two magnets are brought together , a pull happens when a force of attraction is experienced where the magnets move close to each other. This means their polarity is different and thus causes the magnets to pull closer to each other.
An elevator in an office building completed the
following trips:
• Ist floor to 8th floor
• 8th floor to 4th floor
• 4th floor to 13th floor
The distance between each floor of the office building is 3.0 m. which table shows the total distance traveled and displacement of the elevator ?
The final distance traveled by the elevator is 60m and moved 36m (option B).
How to calculate the total distance traveled by the elevator?To calculate the total distance traveled by the elevator, we must take into account that each floor is equivalent to a distance of 3 meters.
So we need to multiply the number of floors he travels on each trip and multiply it by 3 to find the distance he traveled.
3m × 7 = 21m
3m × 4 = 12m
3m × 9 = 27m
To know the total distance traveled by the elevator, we must add the meters traveled in each displacement:
21m + 12m + 27m = 60m
On the other hand, to know the displacement that the elevator made from its initial position to its final position, we multiply 3 by the number of floors that there is a difference between its initial position and its final position.
3m × 12 = 36m
According to the above, it can be inferred that the correct answer is B. Because the elevator traveled a total of 60m and moved 36m.
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The specific heat capacity of water is 4,200 J/kg °C.
Calculate the thermal energy that must be
absorbed by 1.4 kg of water to increase its
temperature by 25 °C.
help TvT
Look at the diagram below that shows information about the sun, Earth, and moon. Use that information to calculate and compare the gravitational forces between the Earth and the Sun, and the Earth and the Moon.
i. The gravitational force between the earth and sun can be obtained as follow:
Mass of earth (M₁) = 5.987×10²⁴ KgMass of sun (M₂) = 1.989×10³⁰ KgDistance apart (r) = 1.5×10¹¹ mGravitational constant (G) = 6.67×10¯¹¹ Nm²/Kg²Gravitational force (F) =?F = GM₁M₂ / r²
F = (6.67×10¯¹¹ × 5.987×10²⁴ × 1.989×10³⁰) / (1.5×10¹¹)²
F = 3.53×10²² N
Thus, the gravitational force between the earth and sun is 3.53×10²² N
ii. The gravitational force between the earth and moon can be obtained as follow:
Mass of earth (M₁) = 5.987×10²⁴ KgMass of moon (M₂) = 7.347×10²² KgDistance apart (r) = 3.844×10⁸ mGravitational constant (G) = 6.67×10¯¹¹ Nm²/Kg²Gravitational force (F) =?F = GM₁M₂ / r²
F = (6.67×10¯¹¹ × 5.987×10²⁴ × 7.347×10²²) / (3.844×10⁸)²
F = 1.99×10²⁰ N
Thus, the gravitational force between the earth and moon is 1.99×10²⁰ N
How do i compare the gravitational forces?Gravitational force between the earth and sun (G₁) = 3.53×10²² NGravitational force between the earth and moon (G₂) = 1.99×10²⁰ NComparison =?Comparison = G₁ / G₂
G₁ / G₂ = 3.53×10²² / 1.99×10²⁰
G₁ / G₂ = 177
Cross multiply
G₁ = G₂ × 177
Thus, we can say that the gravitational force between the earth and sun is 177 times bigger than the gravitational force between the earth and moon
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suppose that jupiter had never existed. describe at least three ways in which our solar system would be different, and clearly explain why.
If Jupiter had never existed, there would be significant differences in our solar system. Here are three ways in which our solar system would be different: 1. Fewer Asteroids; 2. Different Orbits;3. More Comets;
1. Fewer Asteroids: Jupiter's gravitational pull has a significant impact on the asteroid belt between Mars and Jupiter. Without Jupiter's gravitational pull, there would be fewer asteroids in our solar system. This could impact the formation of planets and the frequency of asteroid impacts on other planets.
2. Different Orbits: Jupiter's mass affects the gravitational pull of other planets in our solar system, especially the outer planets like Saturn, Uranus, and Neptune. Without Jupiter's mass, the orbits of these planets would be different, and they may have formed differently as well. This could impact the conditions necessary for life to exist on these planets.
3. More Comets: Jupiter acts as a "cosmic vacuum cleaner" by deflecting comets and other objects away from Earth and the inner planets. Without Jupiter's gravitational pull, there would be more comets and other objects that could potentially collide with Earth. This could impact the frequency and severity of meteor impacts on our planet.
In summary, Jupiter's presence has a significant impact on the formation and evolution of our solar system. Without Jupiter, our solar system would be fundamentally different, with fewer asteroids, different planetary orbits, and potentially more comets and other objects that could impact Earth.
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A force of 355 N is applied to an object that accelerates at a rate of 7.8 m/sec2 . What is the mass of the object ?
Answer:
A force of 355 N is applied to an object that accelerates at a rate of 7.8 m/sec2 . What is the mass of the object ?
Explanation:
Two college students push a broken down, 711 kg car to a mechanic. If the first student pushes with a force of 638 N and the second student pushes with a force of 573 N, what is the magnitude of acceleration of the car?
The magnitude of acceleration of the car is 1.70 \(m/s^{2}\) .
Acceleration is the rate of change of velocity with respect to time.
Also it is the capacity of the vehicle to gain speed.Mass of the car = 711 kg
Force exerted by the Student 1 = \(F_1\) = 638 N
Force exerted by the Student 2 = \(F_2\) = 573 N
Total force exerted on the car = F = \(F_1\) + \(F_2\)
F = 638 + 573
F = 1,211 N
As we know that, Force is the product of mass and acceleration i.e.
F = m * a
\(a = \frac{F}{m}\)
a = \(\frac{1211}{711}\)
a = 1.70 \(m/s^{2}\)
The magnitude of acceleration of the car is 1.70 \(m/s^{2}\) to push it to a car mechanic.
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Which of these is an example of chemical energy being converted to mechanical energy?
eating breakfast then walking to the bus.
turning on the radio
piling wood and then making a fire
Answer:
Eating breakfast then walking to the bus
Please help find the total resistance of these circuits!! I will mark brainliest if right!!
Answer:
If you know the total current and the voltage across the whole circuit, you can find the total resistance using Ohm's Law: R = V / I. For example, a parallel circuit has a voltage of 9 volts and total current of 3 amps. The total resistance RT = 9 volts / 3 amps = 3 Ω.
Explanation:
Which of these organisms is connected to all other organisms in a food web?
carnivores
herbivores
scavengers
decomposers
Answer:
I want to say decomposers, because they break down plants that the herbivores eat, and they can also decompose the remains of a scavenger, herbivore, OR carnivore, that was killed and eaten by a carnivore, and maybe even found and eaten by a scavenger. I'm sorry if it's not correct, that's just what my brain has decided right now
Answer:
The answer is number 4. Decomposers
Explanation:
Hope this helps!!
Gamma radiation can be significantly reduced by…
A sheet of paper
Air
A 3 mm thickness of aluminium
Several cm of lead
Answer:
Several cm of lead
Explanation:
why are there significantly more thunderstorms in florida than in california?
Florida is wet and humid, while California is dry and non-humid. Florida also contains lots of lakes which evaporate to create thunderstorms. Due to Florida's smaller size compared to California, there are more thunderstorms there than in California.
A thunderstorm is often referred to as an electrical storm or a lightning storm. It is defined as a storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere, known as thunder. Weak thunderstorms are sometimes called thundershowers.
Some places experience thunderstorms more frequently than others. The state of Florida is smaller than the state of California which is why more thunderstorms occur in Florida than in California.
As Florida is smaller than California, there are therefore more thunderstorms in Florida than in California.
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Which option is an example of a conceptual model?A. mental image of gas molecules as tiny ballsB. A weather map created by Doppler radarC. A clay ball with a slice cut out, showing the layers of EarthD. A diagram of a flagpole and its shadow with measurements provided to calculate the length of the shadow
From the given options let's select the example which shows a conceptual model.
A conceptual model can be said to be a model which shows an abstract representation of any concept which can be visualized or imagined than other models.
It is a model which the designers want users to understand.
From the list, the best option which is an example of a conceptual model is a mental image of gas molecules as tiny balls.
Let's say, for example, you imagine or have a mental picture of gas molecules using your imagination, it helps to understand how a vacuum system works and you can easily solve the problem if something goes wrong.
Therefore, the example of a conceptual model is:
A mental image of gas molecules as tiny balls.
• ANSWER:
A. mental image of gas molecules as tiny balls
HELP NEEDED
1. What change in Earth's atmosphere allowed life to form?
a
Solar radiation split molecules
b
A meteor strike
c
The formation of the oceans
d
The development of an ozone layer
Answer:
D the development of an ozone layer
Explanation:
the rest don't relate to the atmosphere
What black hole is the most recent throughout the infinitive solar galaxy? 50 points!!! The first person to answer will be the Brainliest.
Answer:
Judging from the number of stars large enough to produce such black holes, however, scientists estimate that there are as many as ten million to a billion such black holes in the Milky Way alone.
Explanation:
Consider the three parts of the circuit: the top branch with two bulbs; the middle branch with one bulb; the battery.
A. Rank the current through each, from greatest to least.
B. Rank the voltage across each from greatest to least.
A) The current through the branches can be ranked as follows; 1. The middle branch 2. The top branch 3. The battery.Explanation: Current is measured in amperes, and it is the flow of electrical charge in the circuit. When we turn on an appliance, a current flows through the circuit, powering the device. It's crucial to note that current is the same at all points in a series circuit.
The formula for current is I = V/R, where V is the voltage and R is the resistance. The circuit's middle branch has only one bulb, so its resistance is lower than the resistance of the top branch. As a result, the current in the middle branch is greater than the current in the top branch. The battery has the greatest current because it is the source of the current that flows through the circuit.
As a result, the current can be ranked as follows: middle branch > top branch > battery. B) The voltage across the branches can be ranked as follows; 1. The battery 2. The top branch 3. The middle branch.Explanation: Voltage is measured in volts and is the electrical potential difference between two points in a circuit. Voltage is the same across all branches in a parallel circuit. It's crucial to note that the sum of voltages in a parallel circuit is the same as the voltage of the battery.
The voltage across the battery is the same as the voltage across the top branch since the battery is in parallel with the top branch. The voltage across the middle branch, on the other hand, is the lowest because it has just one bulb and has a lower voltage drop than the top branch. As a result, the voltage can be ranked as follows: battery > top branch > middle branch.
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hayashi 2004 ), temperature-electrical conductivity relation of water for environmental monitoring and geophysical data inversion,
hayashi 2004 ), temperature-electrical conductivity relation of water for environmental monitoring and geophysical data inversion,
electric conductivity (EC) is often used to map infected groundwater, separate movement hydrographs, and screen the mixing of sparkling and salt water. considering EC is temperature-structured, it's far essential to file the recorded EC values at various temperatures as matching to a widespread temperature. typically, a random consistent is hired for temperature repayment under the belief that the EC-temperature courting is linear (as an instance, a upward thrust of two% in EC each 1 °C). The EC-temperature relationship of natural waters with wildly dissimilar compositions and salinities is tested on this research. The EC-temperature dating changed into slightly nonlinear within the 0–30 °C temperature variety, however the linear equation got here as a substitute near describing it.The temperature correction issue for 25 °C ranged from 0.0175 to zero.0198, with an average price of 0.0187.
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How were joules converted into electron Volts?
Joules can be converted into electron Volts (eV) by using the formula E = qV, where E is the energy in joules, q is the charge of an electron, and V is the potential difference in volts.
The charge of an electron is 1.602 × 10^-19 coulombs, so the formula can be rewritten as E = (1.602 × 10^-19) V. To convert joules into electron volts, we simply divide the energy in joules by the charge of an electron.
Here is a step-by-step explanation of how to convert joules into electron volts:
Step 1: Find the energy in joules that you want to convert into electron volts.
Step 2: Divide the energy in joules by the charge of an electron (1.602 × 10^-19 coulombs) to get the energy in electron volts.
Step 3: The result you get is the energy in electron volts.
For example, if you have an energy of 1 joule and want to convert it into electron volts, you would do the following:
1 joule / (1.602 × 10^-19 coulombs) = 6.241 × 10^18 electron volts
So, 1 joule is equivalent to 6.241 × 10^18 electron volts.
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How many millimeters of water can dissolve 5g of lead nitrate
The solubility of lead nitrate is 52 grams per 100 milliliters of water at 0°C. Since the question does not specify the temperature, we will assume it is 0°C.To calculate the number of millimeters of water required to dissolve 5 g of lead nitrate,
we must first calculate the number of milliliters of water required to dissolve 5 g of lead nitrate.52 grams of lead nitrate can dissolve in 100 milliliters of water. So,5 g of lead nitrate can dissolve in x milliliters of water.= (5 g / 52 g) × 100 mL= 9.6 mLTherefore, 5 g of lead nitrate can dissolve in 9.6 mL of water. However, the question is asking for the number of millimeters of water, not milliliters. Since 1 milliliter of water weighs 1 gram,9.6 milliliters of water will weigh 9.6 grams.Thus, 5 g of lead nitrate can dissolve in 9.6 millimeters of water.
main answer:5 g of lead nitrate can dissolve in 9.6 millimeters of water. :52 grams of lead nitrate can dissolve in 100 milliliters of water. So, 5 g of lead nitrate can dissolve in x milliliters of water.= (5 g / 52 g) × 100 mL= 9.6 mLTherefore, 5 g of lead nitrate can dissolve in 9.6 mL of water. However, the question is asking for the number of millimeters of water, not milliliters. Since 1 milliliter of water weighs 1 gram,9.6 milliliters of water will weigh 9.6 grams.Thus, 5 g of lead nitrate can dissolve in 9.6 millimeters of water.
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PLS HELP ME FAST I NEED TO DO IT NOW
I WILL GIVE YOU 45 POINT
Answer:
A) so the conditions for the expirament don’t affect the outcome
b) to make sure the results are conclusive and accurate
Explanation:
A ray of light strikes a plane mirror at an angle of incidence of 60°, is reflected from the mirror and then strikes a second plane mirror placed so that the angle beftween the mirrors is 45°. The angle of reflection at the second mirror, in degrees, is
A 15
B 25
C 45
D 65
E 75
plz help me guys ASAP!
Answer:
60 - 45 = A. 15
Explanation:
Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.
60 - 45 = A. 15. Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.
What is Plane mirror?A flat or highly polished surface called a plane mirror reflects light or waves to create an image. It is a polished, smooth surface that creates a virtual representation of the actual object.
A plane mirror is a surface on which an image can only be produced by at least two light beams. The intersection of these two beams can occur inside the mirror or appear to occur somewhere behind the mirror.
The image that follows illustrates how an object appears when viewed via a plane mirror.
Therefore, 60 - 45 = A. 15. Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.
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) Describe the path air takes when moving from high to low pressures. Is the path straight or does it curve?
When air moves from an area of high pressure to an area of low pressure, it follows a curved path due to the Earth's rotation and the Coriolis effect. The Coriolis effect causes air to be deflected to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. This means that the path of air moving from high to low pressure will be curved as it follows the direction of the prevailing winds. However, the exact path that air takes can be influenced by other factors such as local topography, temperature gradients, and the presence of weather systems.
About Coriolis EffectThe Coriolis effect is the force on the earth's rotation that deflects the direction of ocean currents. The current deflection to the right occurs at the north pole while the current deflection to the left occurs at the south pole.
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The abundance of __________________ _________________( H, He, Li) in the universe is almost exactly as what The Big Bang predicts. Elements were first fused within the _______________________ after the Big Bang
The abundance of light elements such as Hydrogen (H), Helium (He), and Lithium (Li) in the universe is almost exactly as what the Big Bang predicts. Elements were first fused within the protons and neutrons after the Big Bang.
What is Big bang theory?Light elements like hydrogen (H), helium (He), and lithium (Li) are abundant throughout the cosmos, almost exactly as predicted by the Big Bang theory. After the Big Bang, protons and neutrons were the first to combine elements. The most popular theory for how the universe came into being is called the Big Bang Theory. Simply put, it asserts that the universe as we currently understand it originated from a single point that was infinitely hot and dense and that it first expanded and contracted at unfathomable speeds before slowing down and expanding over the course of 13.7 billion years to become the universe that we see today.
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A group of students, performing the same uniformly Accelerated Motion experiment that you did in lab, dropped a picket fence through a photogate and obtained the following data from the computer.
Blocking Times (s)
0.07376
0.11703
0.15111
0.17994
0.20566
0.22890
0.25022
The band spacing is 0.06 m.
a. Calculate the accelerations.
b. Calculate the average of the accelerations.
c. Create a graph of velocity versus time.
d. Use the trendline option to determine the slope.
e. Report your results.
The acceleration of the object = 0.600 m/s², the average acceleration of the object = 0.600 m/s², the Velocity Vs Time graph slope = 4.8508 m/s² for the uniformly Accelerated Motion experiment.
a) Calculation of Acceleration:
Using the formula of acceleration = 2h / t²
Where,
h = distance traveled,
t = time taken
First we need to calculate the distance traveled by the picket fence through the photogate.
Distance = 7 * band spacing = 7 * 0.06 m = 0.42 m.
Now we will use the formula of acceleration to find out the value of acceleration for each time that was noted by the students.
Time (s) Distance (m) Acceleration(m/s²)
0.07376 0.02115 0.5804
0.11703 0.04230 0.5853
0.15111 0.06345 0.6021
0.17994 0.08460 0.6079
0.20566 0.10575 0.6109
0.22890 0.12690 0.6132
0.25022 0.14805 0.6179
b) Calculation of Average Acceleration:
Average acceleration can be calculated by adding up all the values of acceleration and then dividing by the total number of accelerations.
Average Acceleration = (0.5804+0.5853+0.6021+0.6079+0.6109+0.6132+0.6179)/7
Average Acceleration = 0.600 m/s²
c) Graph of Velocity Vs Time:
Using the formula of velocity = gt
Where,
g = acceleration,
t = time
We can find the value of velocity for each time that was noted by the students.
d) Determination of Slope:
To determine the slope, we need to plot the graph of Velocity Vs Time and then we can use the trendline option to find out the slope. The slope of the graph represents the acceleration of the object.
Time Graph Slope = 4.8508 m/s²
e) Results:
The Acceleration of the object = 0.600 m/s²
The Average Acceleration of the object = 0.600 m/s²
The Velocity Vs Time Graph Slope = 4.8508 m/s²
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Whats a scientific clame?
Answer:
A claim made by scientists backed up with evidence and research!
Explanation:
Hope this helped! :)