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Tutor profile: Andrew H.

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Andrew H.
AP Physics Teacher/Tutor for 4 years with Engineering Degree
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Questions

Subject: Physics (Thermodynamics)

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Question:

A gas in a closed container is heated with 100J of energy, causing the lid of the container to rise 5m with 10N of force. What is the total change in energy of the system?

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Andrew H.
Answer:

50J

Subject: Physics (Newtonian Mechanics)

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Question:

A cannonball is fired perfectly horizontal off the edge of a cliff that is 40m in height at an initial velocity of 50 m/s. How far will the cannonball land away from the edge of the cliff? How long will this take?

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Andrew H.
Answer:

It will take 2.86 seconds to reach the ground and the cannonball will land approximately 143m away from the edge of the cliff.

Subject: Physics (Electricity and Magnetism)

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Question:

A +5 micro-Coulomb test charge is placed in an electric field with a strength of -12 N/C at a distance of 10 millimeters. What would be the resulting force experienced by the test charge and would it be attractive or repulsive?

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Andrew H.
Answer:

6x10^-5 Newtons and it would be an attractive force due to the fact the charges are opposite (positive and negative).

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