The energy of motion is called
a. inertia.
b. power.
c. kinetic energy.
d. potential energy.
c
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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
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).
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