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What is the difference between potential energy and potential?

Potential is the potential energy per unit at a certain location. For example in a electric field the electric potential energy depends on both the location of the charge in the field and the charge we are c...
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Answered by Edward T. • Physics tutor
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What is the difference between a scalar and a vector quantity?

A Scalar quantity has magnitude, but not direction. For example Speed is a scalar quantity.A Vector quantity has both direction and magnitude. For example Velocity is a vector quantity.
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Answered by Nathan G. • Physics tutor
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A simple pendulum is an example of a system in Simple Harmonic Motion, using conservation laws find a) the greatest speed of the bob and b) the magnitude of speed at a height of 1.0cm above the minimum point. Given it starts at rest, at a height of 20cm.

As this is an isolated system and a simple pendulum starting at rest, at maximum height, all the energy is in potential energy. The known equation for potential energy is simply mgh (mass x acceleration due ...
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Answered by Thomas S. • Physics tutor
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A child is going down a snowy hill on a sledge. Draw a free-body force diagram for the child and sledge.

First, we model the child as a single point particle. Then, we add in arrows representing vectors for the relevant forces: friction, weight and the contact force. We can also assume that the child has reache...
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Answered by Tessa B. • Physics tutor
5661 Views

How would you calculate the vertical and horizontal components of the velocity of an object with an initial velocity of 15m/s which is travelling upwards at an angle of 30 degrees to the horizontal?

With these sort of questions involving components, I would always advise drawing a diagram of the problem so that you're clear of the situation!In this case we have an object that is travelling at a speed of...
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Answered by Joseph P. • Physics tutor
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