In a parallel universe, there is a planet with the same mass and radius as Earth. However, when an apple is dropped on this planet, it fall with an acceleration of 5 (meters per second) per second. The value of G in this parallel universe is
A. the same as it is in our universe
B. twice as large as it is in our universe
C. half as large as it is in our universe
D. four times as large as it is in our universe
Answer: C. half as large as it is in our universe
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If less horizontal force is applied to a sliding object than is needed to maintain a constant velocity, the object
A) accelerates in the direction of the applied force. B) experiences decreased friction. C) eventually slides to a stop. D) none of the above
A miracle car with a 100% efficient engine burns fuel having a 40-megajoules-per-liter energy content. If air drag and overall frictional forces at highway speeds totals 1000 N, what distance per liter can be achieved on the highway?
A) 30 km B) 40 km C) 50 km D) more than 50 km E) need more information
Earth's magnetic axis is the same as its rotation axis.
Answer the following statement true (T) or false (F)
The lowest A on a piano has a frequency of 27.5 Hz. If the tension in the 2.00-m string is 308 N, and one-half wavelength occupies the string, what is the mass of the wire?
a. 0.025 kg b. 0.049 kg c. 0.051 kg d. 0.081 kg e. 0.037 kg