The energy of motion is called
a. inertia.
b. power.
c. kinetic energy.
d. potential energy.
c
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Through what potential difference would an electron initially at rest need to be accelerated to have its total energy be five times its rest energy? (me = 9.11 × 10^–31 kg, c = 3.00 × 10^8 m/s, and qe = 1.6 × 10^?19 C)
a. 1.6E–19 V b. 2.6E+6 V c. 2.0E+6 V d. 210 V e. 6.8E–3 V
In an AC series circuit the inductive reactance is 41.0 ? and the frequency is 137 Hz. What is the inductance in the circuit?
a. 4.8E–2 H b. 1.5E–1 H c. 3.0E–1 H d. 4.7E–1 H e. 2.2E–1 H
Two satellites are launched into circular orbits about the Earth. The one closer to the Earth has a period of 90 minutes. The one farther away will have a period which is ________ (longer than, shorter than, or the same as) 90 minutes.
Fill in the blank(s) with the appropriate word(s).
Compared to a chemical rocket, an ion engine has a
A) smaller thrust but can be operated for a longer time period B) smaller thrust and can only be operated for a shorter time period C) larger thrust and can be operated for a longer time period D) larger thrust but can only be operated for a shorter time period