If the nonzero momentum of a particle with mass is doubled, what happens to its total energy?
a. It also doubles.
b. It increases, more than doubling.
c. It stays the same since total energy is a constant for a given particle.
d. It increases, but less than doubling.
d
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When we say that jovian planets contain significant amounts of hydrogen compounds except, we mean all the following chemicals except
A) carbon dioxide. B) water. C) ammonia. D) methane.
If observations had shown that the cosmic microwave background was perfectly smooth (rather than having slight variations in temperature), then we would have no way to account for
A) the relationship between the strong and the weak force. B) the fact that our universe is expanding. C) how galaxies came to exist. D) the existence of helium in the universe.
An airplane flies in a horizontal circle of radius 500 m at a speed of 150 m/s. If the plane were to fly in the same 1000-m circle at a speed of 300 m/s, by what factor would its centripetal acceleration change?
A. 0.25 B. 0.50 C. 1.00 D. 2.00 E. 4.00
A series RLC circuit has a 100-? resistor, 2.00-mH inductor and a 4.00-?F capacitor connected across a 120-V rms ac source at (1000/?) Hz. What is the power dissipated by the circuit?
A) 184 W B) 18.6 W C) 58.4 W D) 91.8 W E) 180 W