Lillian safely touches a 100,000-volt Van de Graaff generator. Although the voltage is high, the relatively small amount of charge means a relatively small amount of

A) energy transfer.
B) electric field.
C) polarization.
D) conduction.


Answer: A

Physics & Space Science

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Energy Conservation With Nonconservative Forces: A 7.5-kg otter slides down a hill, starting from rest at the top. The sloping surface of the hill is 8.8 m long, and the top is 6.5 m above the base. If the speed of the otter at the bottom of the hill is 9.2 m/s, how much energy was lost to nonconservative forces on the hill?

Fill in the blank(s) with the appropriate word(s).

Physics & Space Science

If both the mass and the velocity of a ball are tripled, the kinetic energy is increased by a factor of

A) 18. B) 81. C) 6. D) 9. E) 27.

Physics & Space Science

If the Moon is too far from Earth during a solar eclipse, the _____ does not reach Earth's surface

a. umbra b. ecliptic c. prominence d. penumbra e. solar disk

Physics & Space Science

Equilibrium: A push of magnitude P acts on a box of weight W as shown in the figure. The push is directed at an angle ? below the horizontal, and the box remains a rest. The box rests on a horizontal surface that has some friction with the box. The friction force on the box due to the floor is equal to

A. P sin ?. B. P cos ?. C. 0. D. P cos ? + W. E. P + W.

Physics & Space Science