A 3.8 kg object is lifted 12 meters. approximately how much work is performed during the lifting?

Answers

Answer 1

Answer: Work done is equivalent to potential energy.

W = mgh. m is mass in kg, g is acceleration due to gravity = 9.81 m/s², h is height = 12 m

= 3.8 * 9.81 * 12

= 447.336 Joules

Answer 2

Answer:

W = mgh.

m is mass in kg,

g is acceleration due to gravity = 9.81 m/s²,

h is height = 12 m

= 3.8 * 9.81 * 12

= 447.336 Joules

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The slope of a position vs time graph is equal to what

Answers

Since I am not sure what you are asking, I am just going to throw a bunch of information at you and hope that the answer you are seeking is present.

1) The slope is equal to the velocity at a given time. In other words, find the velocity and evaluate at it at that specific value of time.

2) Velocity = acceleration x time, assuming the acceleration is constant.

3) Velocity = area under the curve of acceleration, evaluated from the start time to the end time.

Hope this helps.

Final answer:

The slope of a position vs time graph represents the average velocity of the object. The velocity corresponds to the rate of change in the object's position over time. Further analysis reveals that the slope of a velocity vs. time graph signifies the object's acceleration.

Explanation:

In the context of physics, when analyzing a position versus time graph, the slope represents the object's average velocity. The slope is calculated as the rise over run. Rise is the change in position, or displacement, and run is the change in time. For example, Figure 3.9 shows the position (x(t)) versus time graph. The slopes of the tangent lines at specific times (0.25s, 0.5s, and 1s) indicate the object's velocity at the corresponding times. Therefore, the slope of a position vs time graph equals the velocity of the object.

Further analysis of a velocity versus time graph would then show that its slope represents the object's acceleration. This highlights the direct relationship between position, velocity, and acceleration in motion physics.

Learn more about Slope of Position vs Time Graph here:

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F=ma make m the subject

Answers

Answer:

M=f/a

Explanation:

F=m x a

÷a both sides

F÷a = m

M=f/a

using kepler's 3rd law and newton's law of universal gravitation, find the period of revolution p of the planet as it moves around the sun. assume that the mass of the planet is much smaller than the mass of the sun.

Answers

As we all know that Kepler's third law states the square of the period is proportional to the cube of the average distance. Some of the part of the equation are just mere constants, and they are very vital.

After deriving the equation, we can get the formula.

T = sqrt { 4 * PI^2 /(GM) * [(R1 + R2)/2]^3 }

The picture above shows 3 sets of balloons, all with a particular charge. Which of the picture(s) is true? Explain. Then explain why the other 2 pictures are incorrect. Make sure to explain all 3 sets.

Answers

Among all of the others Picture 3 is correct.

We know, Like charges repel each other whereas unlike charges attract each other, In picture 3 they are like charges (both are positive) so, we can repulsion hence, picture is correct!

In picture 1, they are unlike charges, & showing repulsion which is wrong, same In picture 2, they are like charges & showing attraction so they are wrong as well

Hope this helps!

C is correct because they would repel each other A is wrong be they wouldn't repel And B is wrong because they shouldn't be repelling each other

Which is an example of a wedge?
a. bowl
b. spoon
c. fork
d. knife

Answers

the answer is d.... Knife.

Hope this helped :)

Which of the following most directly shows how physics affects society?A. A car comes equipped with side air bags.
B. A business conducts meetings over the Internet.
O C. A surgeon performs a heart transplant.
D. A singer wins an award for a song she wrote.

Answers

the answer is definitely A.

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