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a 55 kg swimmer is standing on a stationary 175 kg floating raft. the swimmer then runs off the raft horizontally with a velocity of + 3.7 m/s realtive to the shore. Find the recoil velocity that the raft would have if there were no friction and resistance due to the water.
A freight car with a mass of 2500 kg rolls down an inclined track through a vertical distance of 1.5m. at bottom of the incline, on a level track, the car collides and couples with the identical freight car that was at rest. What percentage of th..
How would you describe the discoveries of Benjamin franklin, Robert millikan, cgarles-augastin de coulomb and Ernest ruthford
A 500g rock on a 80 cm long string is swung in a vertical circle 300 cm above the ground. What is the speed of the ball at this point
A television set connected to a 120 outlet consumes 76 of power. How much current flows through the television
At a rock concert, the engineer decides that the music isn't loud enough. He turns up the amplifiers so that the amplitude of the sound, By what percentage does the intensity increase
You are given an ideal air-filled parallel plate capacitor with plates of area 45.0 cm2 and separation 2.10 mm. What is the new value of the capacitance
A spool of thread has an average diameter of 1.8 cm. If the spool contains 39.2 m of thread, how many turns of thread are on the spool
A cubic block of lead alloy 0.1m on a side is placed in a bucket of mercury. What is the magnitude of the buoyant force
A 100 g (mass) bouncy ball has a downward velocity of 10 m/s right before hitting the ground. How long was the ball in contact with the ground to the nearest second
A person with a weight of 222 lb stands on two feet with their weight equally distributed between the two shoes, compute the pressure on each shoe independently
Blood can carry excess energy from the interior to the surface of the body, where the energy is dispersed in a number of ways. determine the temperature of the blood
The gas in a cylindrical container has a pressure of 1.0 multiply.gif 105 Pa and is at room temperature (293 K). What is the final temperature of the gas
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