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A simple pendulum is made from a 0.739-m-long string and a small ball attached to its free end. The ball is pulled to one side through a small angle and then released from rest. After the ball is released, how much time elapses before it attains its greatest speed?
It takes an elevator 3.4 minutes to raise a vehicle with a mass of 366 kg from the floor to a height of 7 meters. What size (power) motor (in watts) does it take to do the job
question1as at rest two trains has sirens that release a frequency of 300 hz. the trains travel toward one another and
A rock thrown with an initial velocity of 38.5 m/s at an angle of 55.0 o with respect to the horizontal has a range of 975 m on a certain planet
A block of glass with flat sides is surrounded by air. A ray of light traveling in the glass (refractive index na) is incident on the flat interface with air at the top surface of the block of glass, What is the refractive index of the glass
A dart with a mass of 0.025 kg traveling with a speed of 13 m/s impacts a dart board and stops. What work was done by the dart board in stopping the dart
A second baseman tosses the ball to first baseman, which catches it at the same level from which it was thrown. The throw is made with an initial speed of 15 m/s at an angle of 38.0^circ above the horizontal. What is the horizontal component of ba..
A train sounds its horn as it approaches an intersection. The horn can just be heard at a level of 46 dB by an observer 10 km away. What is the average power generated by the horn
In 1967, New Zealander Burt Munro set the world record for an Indian motorcycle, on the Bonneville Salt Flats in Utah, of 183.58 mi/h. how long did it take Burt to complete the course
A kg steel ball strikes a wall with a speed of m/s at an angle of with the surface. It bounces off with the similar speed and angle. If the ball is in contact with the wall for s, what is the average force exerted on the ball by the wall.
1. How much charge has been transferred from the negative to the positive terminal? Express your answer using two significant figures. 2.How much work has been done on the charges that passed through the battery? Express your answer using two sign..
question1two bicycle tires are set rolling with the same initial speed of 4.00ms along a long straight road and
Inside an insulated container, a 250-g ice cube at 0 °C is added to 200 g of water at 18 °C. What is the remaining ice mass
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