Pressure: A 100-kg person sits on a 5-kg bicycle. The total weight is borne equally by the two wheels of the bicycle. The tires are 2.0 cm wide and are inflated to a gauge pressure of 8.0 × 105 Pa. What length of each tire is in contact with the ground?
A. 1.6 cm
B. 1.8 cm
C. 3.2 cm
D. 2.4 cm
E. 6.4 cm
Answer: C
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The potential differences around a loop ABCA in a circuit (starting at A and going back to 
A. 16 V B. 4.0 V C. -4.0 V D. -16 V E. -12 V
A 3.00 kg mass is located at x = 2.0 cm and y = 0.0. A 3.00 kg mass is located at x = 0.0 and y = 2.0 cm. A 4.00 kg mass is located at x = 3.0 cm and y = -3.0 cm. Where is the location of the center of mass?
A. (+1.8 cm, -0.60 cm) B. (+1.8 cm, +0.60 cm) C. (+0.60 cm, -1.8 cm) D. (+3.5 cm, -0.6 cm) E. (+1.8 cm, +1.6 cm)
When tectonic plates collide, they fuse together and come to rest
Indicate whether the statement is true or false
A boat floating in a large pool is loaded with wood blocks. The water level at the pool's edge is marked with a red line. The blocks are now thrown overboard and float outside the boat. When the water becomes calm again,
A. the red line is slightly higher than the water level. B. the red line is still at the water level. C. the red line is slightly lower than the water level.