Simple Harmonic Motion: If the frequency of a system undergoing simple harmonic motion doubles, by what factor does the maximum value of acceleration change?
A. 4
B. 2
C. 
D. 2/?
Answer: A
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Due to its elliptical orbit, Mars is closer to the Sun on average during summer in the Southern Hemisphere. This means Southern Summer on Mars will be
A) short and hot B) long and hot C) long and mild D) short and mild
A 1 mF, a 2 mF, and a 3 mF capacitor are connected in series, the combination being connected across a 9 volt battery. (a) Which capacitor has the greates charge? (b) Which capacitor has the greatest voltage?
What will be an ideal response?
Why is Venus's atmosphere hotter than Mercury even though it is farther from the Sun?
a. Venus has a thin atmosphere thus allowing more of Sun's radiation to enter. b. Venus contains water vapor in its atmosphere, which absorbs more heat. c. Venus contains 96 percent CO2 resulting in very hot temperatures d. Mars contains more CO2, which has a cooling effect on its atmosphere. e. Mercury has a hotter atmosphere because it is closer to the Sun than Venus.
A person is nearsighted with a far point of 75.0 cm
(a) What focal length contact lens is needed to give him normal vision? (b) What is the power of the corrective lens?