A disk and a hoop of the same mass and radius are released at the same time at the top of an inclined plane. If both are uniform, which one reaches the bottom of the incline first if there is no slipping?
A) The hoop
B) The disk
C) Both reach the bottom at the same time.
B
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Nellie's weight and normal force usually have the same magnitude when she stands on a
A) horizontal surface. B) inclined surface. C) either a horizontal or inclined surface.
A 1.6-kg block on a horizontal frictionless surface is attached to an ideal massless spring whose spring constant is 190 N/m. The block is pulled from its equilibrium position at x = 0.00 m to a displacement x = +0.080 m and is released from rest
The block then executes simple harmonic motion along the horizontal x-axis. What is the velocity of the block at time t = 0.40 s? A) 0.82 m/s B) -0.82 m/s C) 0.30 m/s D) -0.30 m/s E) 0.00 m/s
If work is done on an electric charge, a ______________ is present
a. resistance b. current c. voltage d. transformer e. bigger charge
A capacitor of capacitance C takes 2 s to reach 63% of its maximum charge when connected in series to a resistance R and a battery of emf
How long does it take (from zero initial charge) for this capacitor to reach 95% of its maximum charge? A) 3 s B) 5 s C) 7 s D) 4 s E) 6 s