An ideal spring has a spring constant of 2500 N/m. is stretched 4.0 cm. How much work is required to stretch the spring by 4.0 cm?
A) 4.0 J
B) 0.00 J
C) 1.0 J
D) 3.0 J
E) 2.0 J
E
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An electrically neutral metal sphere hangs from an insulating thread. A charged glass wand is brought near to the sphere. Describe what occurs next:
A. The sphere is attracted to the wand B. The sphere is neither attracted nor repelled, since it is electrically neutral C. The sphere is repelled by the wand D. The sphere will become charged
Molar Specific Heats: How much heat is required to raise the temperature of 2.00 moles of an ideal monatomic gas by 10 C° at constant volume? (R = 8.31 J/mol ? K).
A. 249 J B. 416 J C. 208 J D. 200 J E. 125 J
Using a longer-handled wrench to loosen a tight nut allows you to
A. apply more torque to the nut. B. exert more force on the nut. C. increase the moment of inertia of the nut. D. pull harder on the wrench.
A 2.0 ?F capacitor is charged through a 50,000. ? resistor. How long does it take for the capacitor to reach 90% of full charge?
A) 2.19 s B) 0.23 s C) 0.9 s D) 9.1 s E) 2.3 s