The recoil experienced when firing a shotgun is a consequence of ________ law.
A. Newton's Third
B. Newton's First
C. Kepler's First
D. Kepler's Third
Answer: A
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A 4.00 kg object is moving at 5.00 m/s EAST. It strikes a 5.00 kg that is moving WEST at 2.00 m/s. The objects have a one-dimensional elastic collision in the EAST-WEST direction. The velocity of the 5.00 kg object after the collision is
A. 4.22 m/s EAST. B. 2.78 m/s WEST. C. 4.22 m/s WEST. D. 2.78 m/s EAST. E. 1.11 m/s WEST.
Two forces act on a 8.50-kg object. One of the forces is 14.0 N. If the object accelerates at 3.50 m/s2, what is the greatest possible magnitude of the other force?
a. 1.0 N b. 15.8 N c. 43.8 N d. 26.3 N e. 73.5 N
Ideal Gas Law: Your lungs hold 4.2 L of air at a temperature of 27°C and a pressure of 101.3 kPa. How many moles of air do your lungs hold? (R = 8.31 J/mol ? K)
A. 0.15 moles B. 0.17 moles C. 0.19 moles D. 0.21 moles E. 0.23 moles
A standing wave is set up on a string so that it has 5 nodes. If you start at the central node and move exactly one wavelength in either direction, you will wind up at
A. neither a node nor an antinode but still on the string. B. an antinode. C. a node. D. somewhere off the string.