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A water skier, moving at a speed of 9.30m/s, is being pulld bya tow rope that makes an angle of 37.0o with respect to thevelocity of the boat. The tow rope is parallel to the water.The skier is moving in the same direction as the boat, if thetension in the rope is 135N, determing the work that it does in12.0s.
A student throws a set of keys vertically upward to her sorority sister, who is in a window 4.00m above. The second student catches the keys 1.50s later. (a) With what initial velocity were the keys thrown? (b) what was the velocity of the keys just..
Find out the angular momentum and angular speed of the disk. what is the magnitude of the force (in mN) between the two charges.
A 45.5-g golf ball is driven from the tee with an initial speed of 47.3 m/s and rises to a height of 30.4 m. Neglect air resistance and determine the kinetic energy of the ball at its highest point
Consider a uniform thin rod of length 2.00 m and mass 1.00 kg is lying on a smooth horizontal table. How far does the center of mass of the rod travel during the time it takes to make one complete revolution
Two lightbulbs operate on the same potential difference. Bulb A has four times the power output of bulb B. What is the ratio of the current in bulb A to the current in bulb B?
Find out that the value of the gravitational field strength
A diesel engine performs 2200J of mechanical work and discards 4300J of heat each cycle. A) How much heat must be supplied to the engine in each cycle? B) What is the thermal efficiency of the engine?
A roofer is working on a roof that slants at 39.0° above the horizontal, he accidentally nudges his 89.0N toolbox
Two long parallel wires are separated by 4.0mm. The current flowing in one of the wires is twice that in the other wire. If the magnitude of the force on a2.0-m length of one of the wires is7.2µN, what are the values of the two currents? (Enter your ..
An object is thrown vertically upward with an initial velocity of 14.7m/s, how long does it take for the object to be 9.8m from its initial position
A 1200-turn coil of wire that is 2.1 cm in diameter is in a magnetic field that drops from 0.14 T to 0 T in 12 ms. What is the emf of the coil
A ball of mass 0.40 kg is fired with velocity 140 m/s into the barrel of a spring gun of mass 2.1 kg initially at rest on a frictionless surface. What fraction of the ball's initial kinetic energy is stored in the spring
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