In simple harmonic motion the position of the oscillator:
A. Is behind its acceleration by a quarter cycle, or 
radians
B. Leads its acceleration by a quarter cycle, or 
radians
C. Leads its velocity by a quarter cycle, or 
radians
D. Is behind its velocity by a quarter cycle, or 
radians
D. Is behind its velocity by a quarter cycle, or radians
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The basic function of the electric generator is which of the following conversion processes?
a. alternating current to direct c. low voltage to high or vice versa b. electrical energy to mechanical d. mechanical energy to electrical
If the electric field just outside a thin conducting sheet is equal to 1.5 N/C, determine the surface charge density on the conductor.
A. 53 pC/m2 B. 27 pC/m2 C. 35 pC/m2 D. 13 pC/m2 E. 6.6 pC/m2
Linear momentum is conserved in __________ collisions
Fill in the blank(s) with correct word
100 grams of liquid nitrogen at 77 K is stirred into a beaker containing 200 grams of 5°C water. If the nitrogen leaves the solution as soon as it turns to gas, how much water freezes? (The heat of evaporation of nitrogen is 6.09 cal/gram and the heat of fusion of water is 80 cal/gram.)