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1. Starting from rest, a proton falls through a potential difference of 2700 V. What speed does it acquire?

2. A long, straight wire carries a current of 2.5 A. Find the magnitude of the magnetic field 25 cm from the wire.

3.A long, straight wire carries a current of 2.5 A. Find the magnitude of the magnetic field 25 cm from the wire.

4. Estimate the average power output of the Sun, given that about 1350 W/m2 reaches the upper atmosphere of the Earth.

5.If a current is flowing with a value of 5.9 A, how much electron charge passes any single point in 25 seconds?

6. If the force between two charges increases by a factor of 16 because the charges are
moved closer together, how much closer are they moved?

7.A flux of 4.0 × 10-5 Wb is maintained through a coil for 0.50 s. What emf is induced in this coil by this flux?

8.A beam of light traveling in air is incident on a transparent plastic at an angle of incidence of 50o. The angle of refraction is 35o. What is the index of refraction of the plastic?

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