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A circular saw blade 0.200 m in diameter starts from rest. In 6.00 second it accelerates with constant angular acceleration to an angular velocity of 140 rad/s. Evaluate the angular acceleration and evaluate the angle through which the blade has turned.
A jet airplane is in level flight. The mass of the airplane is m = 8990 kg. What is the magnitude of the lift force acting on the plane
A 13000 kg railroad car travels alone on a level frictionless track with a constant speed of 17 m/s. A 6500 kg load, originally at rest, is dropped onto the car. What will be the car's new speed.
A shotgun fires a large number of pellets upward, with some pellets traveling very nearly vertically and others as much as 1.0o from the vertical. suppose that the initial speed of the pellets is uniformly 150ms-1 and ignore air resistance.
Nichrome wire of cross-sectional radius 0.791 mm is to be used inwinding a heating coil. If the coil must carry a current of9.25 A when a voltage of 1.20x102 V is applied acroosits ends, find a) the required resistance of the coil and b) the lengt..
A girl is using a rope to pull a box that has mass of 30kg across a level surface with constant velocity. What is the normal force of the floor on the box
what will a 20000 omegav meter read on its 1 v scale when attached to a 1 v source with an internal resistance of 10k?
The two stick together and move off with a speed of 4.0 m/s. Evaluate what is the mass of the second car?
An object 3.25 cm high is placed 18.7 cm in front of a convex mirror with radius of curvature of 8.35 cm. Where is the image formed
one way to keep the contents of a garage from becoming too cold on a night when a severe subfreezing temperature is
Two carts collide in a perfectly elastic collision. Cart A has a mass of 0.5 kg and an initial velocity of 0.19 m/s. What is the final speed of each cart
An alert physics student stands beside the tracks as a train rolls slowly past. He notes that the frequency of the train whistle is 443 Hz when the train is approaching him.
A 1.0E-4 F capacitor is charged to a potential of 50.0 V. It is connected to a 5.0 H inductance at time t = 0. What is the percent of the energy stored in the magnetic field at t = 0.2s
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