A string of length L with fixed ends is made to go into standing wave patterns. What is the longest wavelength associated with all possible standing wave patterns in this situation?
a. L/4
c. L
b. L/2
d. 2L
D
Physics & Space Science
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A 2.5-kg object falls vertically downward in a viscous medium at a constant speed of 2.5 m/s. How much work is done by the force the viscous medium exerts on the object as it falls 80 cm?
A. +2.0 J B. +20 J C. ?2.0 J D. ?20 J E. +40 J
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The closest star to the Sun is about how far away?
a. 17.7 light-years b. 0.52 light-years c. 33.6 light-years d. 4.3 light-years
Physics & Space Science
If the Earth didn't have an atmosphere what would happen to its temperature?
a. It would go up. b. It would go down. c. It wouldn’t change.
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What is the difference between 105.3 and 101.12?
A) 4 B) 4.2 C) 4.18 D) 4.180 E) 4.1800
Physics & Space Science