Simple Harmonic Motion: An object undergoing simple harmonic motion has a maximum displacement of 6.2 m at t = 0.00 s. If the angular frequency of oscillation is 1.6 rad/s, what is the object's displacement when t = 3.5 s?
A. 4.8 m
B. 5.6 m
C. 3.7 m
D. 3.1 m
Answer: A
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A mass 
is connected by a light string that passes over a pulley of mass M to a mass 
sliding on a frictionless horizontal surface as shown in the figure. There is no slippage between the string and the pulley. The pulley has a radius of 25.0 cm and a moment of inertia of 1?2 
If m1 is 1.00 kg, 
is 2.00 kg, and M is 4.00 kg, then what is the tension in the string attached to 
?
A. 3.92 
B. 3.65
C. 3.23
D. 3.02
E. 2.98
During each cycle of operation, the thermal energy input to a heat engine is 400 J and the exhaust is 300 J. This engine's efficiency is
A) 50%. B) 0%. C) 75%. D) 25%. E) 100%.
What is the highest energy of a photon in the Balmer series?
A. 1.89 eV B. 3.40 eV C. 1.51 eV D. 0.94 eV E. 0.66 eV
A particle (charge = Q) is kept in a fixed position at point P, and a second particle (charge = q) is released from rest when it is a distance R from P. If Q = +2.0 mC, q = -1.5 mC, and R = 30 cm, what is the kinetic energy of the moving particle after it has moved a distance of 10 cm?
a. 60 kJ b. 45 kJ c. 75 kJ d. 90 kJ e. 230 kJ