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Question: The total angular momentum of a flywheel , having a rotational inertia 0.0924 Kg-m^2 about its axis, decreases from 4.38 kg-m^2/s to 1.04 kg-m^2/s in 0.99s. What is the average power of the flywheel during this interval . First find the torque, and alpha.
You are in a hot air balloon (yes, another balloon problem!) rising from the ground at a constant velocity of 2.70 m/s upward. How long does the cork remain in the air
A thin spherical shell of mass 0.300 kg and diameter 0.190 m is filled with alcohol. It is then released from rest on the bottom of a pool of water. Find the acceleration of the alcohol filled shell as it rises toward the surface of the water.
One force acting on a machine part is F = ( - 5.00 N) i hat+ (4.00 N) j hat. The vector from the origin to the point where the force is applied is r = (- 0.450m) i hat + (0.150m) j hat , Calculate the torque produced by this force
air traffic controllers usually describe the position of an aircraft relative to the airport by altitude, What are the x, y, and z components (in meters) of hte position vector
Two large parallel metal plates are 1.4 cm apart and have charges of equal magnitude but opposite signs on their facing surfaces. what is the electric field (in V/m) in the region between the plates
The average depth of oceans is about 4km, the oceans cover abou 70% of earths suface. Make an order of nagnitude estimate of the waters volune in he ocean.
A circular loop of flexible iron wire has an initial circumference of 167 cm, Find the magnitude of the emf induced in the loop after exactly time 7.00 seconds has passed since the circumference of the loop started to decrease
A 40 g rifle bullet travelling 260 m/s buries itself in a 4.0 kg pendulum hanging on a 3.0 m long string, which makes the pendulum swing upward in an arc. Find out the vertical and horizontal components of pendulum's displacement.
A 19.0 -kg box is released on a 37 incline and accelerates down the incline at 0.30 m/s^2. Find the friction force impeding its motion
The total electric field consists of the vector sum of two parts. One part has a magnitude of E1 = 1300 N/C, Find the magnitude and direction of the total field
A nuclear power plant produces an average of 4.90 × 103 MW of power during a year of operation. Find the corresponding change in mass of reactor fuel
The angular momentum of a spinning wheel is 230 kg · m2/s. After application of a constant braking torque for 2.2 s, What is the torque applied
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