Question

In: Physics

1. We have a hollow metallic sphere with charge -5.0 uC and radius 5.0 cm. We...

1.

  1. We have a hollow metallic sphere with charge -5.0 uC and radius 5.0 cm. We insert a +10uC charge at the center of the sphere through a hole in the surface. What charge now rests on the outer surface of the sphere?

    +5 uC

    +10 uC

    +15 uC

    -5 uC

  2. A free electron is in an electric field. With respect to the field, it experiences a force acting:

    Parallel

    Anti-parallel

    Perpendicular

    Along a constant potential line

  3. A parallel plate capacitor has a capacitance of 20 uF. What charge on each plate will produce a potential difference of 36 V between the plates of the capacitor?

    7.2 x 10-4 C

    3.6 x 10-4 C

    1.8 x 10-4 C

    0.9 x 10-4 C

  4. What is the intensity of sound from a band with a sound level of 120 dB? (Io = 10-12 W/m2)

    1 W/m2

    1.2 W/m2

    10 W/m2

    12 W/m2

  5. Replacing a wire resistor with another of the same material and length but with three times the diameter will have the effect of changing the resistance by what factor?

    0.33

    1/9

    3

    9

Solutions

Expert Solution

genius_generous answered 1 year ago
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