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Two wheels have the same mass and radius of 4.8 kg and 0.50 m, respectively. One has
(a) the shape of a hoop and the other
(b) the shape of a solid disk.
The wheels start from rest and have a constant angular acceleration with respect to a rotational axis that is perpendicular to the plane of the wheel at its center. Each turns through an angle of 13 rad in 9.4 s. Find the net external torque that acts on each wheel.
Two workers are trying to move a heavy crate. One pushes on the crate with a force , which has a magnitude of 444 newtons (N) and is directed due west.
What is the half-life in days of a radioactive sample with 5.2×1015 atoms and an activity of 5.1×108Bq ? What is the half life in days
A charge +q is at the origin. A charge -2q is at x = 9.10 m on the +x axis. (a) For what finite value of x is the electric field zero? (b) For what finite values of x is the electric potential zero? (Note: Assume a reference level of potential V =..
A pilot knows a 7.00 km distance lies between two landmarks A and B on the level ground below. When he is over landmark A, What is the airplanes altitude
An electric field of 120000 N/C points due west at a certain spot. What is the magnitude of force that acts on a charge of -7.8C at this spot.
A 0.900-V potential difference is maintained across a 1.50-m length of tungsten wire that has a cross-sectional area of 0.400 mm2. What is the current in the wire
assume a long, straight wire carries a current of 6.5 .what would be the frequency of vibrations.
Two point charges are located on the axis as follows: charge = -1.80 at = -0.500 , and charge = 2.20 at the origin (= 0). What is the direction of the net force
Find out the magnitude and direction of the rockets acceleration. Give the direction as an angle above the horizonal.
A small glass bead charged to 6.9nC is in the plane that bisects a thin, uniformly charged, 10-cm-long glass rod, What is the total charge on the rod
A particle travels counter clockwise around the origin at constant speed in the circular path that has a diameter of 2.50 m, going around twice per second. Point Q is on the path halfway between points P and R that lie on the x axis and the y axis..
Consider a series RLC circuit with R = 15 , L = 184 mH, C = 75 µF, and a maximum voltage of 141 V. What is the resonance frequency of the circuit
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