What is the kinetic energy of a 0.135 kg baseball thrown at 40.0 m/s?
a. 54.0 J
b. 87.0 J
c. 108 J
d. 216 J
Ans: c. 108 J
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Entropy: An ideal gas undergoes an isothermal expansion. During this process, its entropy
A. decreases. B. remains unchanged. C. increases. D. cannot be predicted from the data given.
How many arcseconds are in 1°?
A) 60 B) 360 C) 3,600 D) 100 E) 10,000
If a negatively charged particle is placed at rest in an electric potential field that increases in the positive x-direction, the particle will
1.accelerate in the positive x-direction. 2.accelerate in the negative x-direction. 3.remain at rest.
Generators that were used in the past to supply electricity in automobiles have been replaced by
A) batteries. B) armatures. C) dynamos. D) alternators. E) commutators.