What happens to the electric field intensity if you

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What happens to the electric field intensity if you double the distance from the source charge? 7) What happens to the electric field intensity as you double the charge on the test object? 8) Describe how a Wimshurst generator produces a spark (same process as lightning)
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0.2m 10,000 N/C + + + + + + + + q ? 13) A 1.8x10 -5 kg test charge (3.2x10 -5 C) is placed (so starting from rest) in a uniform electric field with an intensity of 8,000 N/C. What will the test object’s velocity be after 2 seconds? 28,444 m/s 14) A car, with a charge of 4x10 -6 C, is initially traveling at 8 m/s (on a horizontal surface) when it encounters a uniform electric field and a surface with friction (So both are stopping the car). The coefficient of friction between the car and the surface is µ=0.2. The magnitude of the electric field is 1500 N/C. If the car is brought to a stop in 0.2s, what is the mass of the car? 0.000158 kg 15) On planet Physics (sorry… kind of uncreative), a scientist wants to use charges to find the acceleration due to the gravity of planet Physics . The scientist places two charge spheres in an insulating tube and stands the tube up vertically (tube prevents the charges from moving right or left). Both spheres have a charge of 1.9x10 -7 C. One charge is on the ground and one hovers 1.2 meters above the charge on the ground. If the mass of both spheres is 1 gram, what is the acceleration do to the gravity of planet Physics ? 0.2m/s 2 16) A proton enters an E-Field traveling at 30% the speed of light.
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