A simple pendulum of length 2.00 m is used to measure the acceleration of gravity at the surface of a distant planet. If the period of such a pendulum is 7.00 s, what is the acceleration of gravity?
A)
7.89 m/s2
B)
6.78 m/s2
C)
1.61 m/s2
D)
0.513 m/s2
E)
17.8 m/s2
C
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What is the change in entropy for the process?
A. 
B. 
C. 
D. 
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a. to eliminate shock hazards b. to prevent fires c. to save on the cost of electricity d. to store charge
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Indicate whether the statement is true or false
A car is traveling north at 17.7 m/s After 12 s its velocity is 141m/s in the same direction. Find the magnitude and direction of the car's average acceleration
A) 0.30 m/s2, south B) 0.30 m/s2, north C) 2.7 m/s2, north D) 2.7 m/s2, south