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A 53-kg womancontestant on a reality television show is at rest at the south endof a horizontal 149-kg raft that isfloating in crocodile-infested waters. She and the raft areinitially at rest. She needs to jump from the raft to a platformthat is several meters off the north end of the raft. She takes arunning start. When she reaches the north end of the raft she isrunning at 4.1 m/s relativeto the raft. At that instant, what is her velocity relative to the water?
A 9.0 x 10 -2 ice cube at 0.0C is dropped into a Styrofoam cup holding 0.35 kg of water at 12C, Find the amount of ice remaining
Find out the frequency of a sound wave moving through iron at 25 degrees Celsius with a wavelength of 0.601m.
A typical wall outlet voltage is 120 volts in the United States. calculate the number of turns on the secondary coil of the adapter transformer
A weightlifter bench-presses a 130.0 kg barbell from his chest to a height equal the length of his arms 0.850 m. How much work does he do? What is the potential energy of the barbell relative to the weightlifter\'s chest after he lifts the barbell
An electric iron connected to a 110V source draws 9A of current.show that the amount of heat generated in one minute is almost 60 kj.
A current of 6.71 A in a solenoid of length 11.0 cm creates a 0.339-T magnetic field at the center of the solenoid. How many turns does this solenoid contain
A 2kg piece of ice @ 0C (273K) is placed in 27C (300k) body of water. Latent heat of fusion is 334kJ/kg. What is the work done by the ice
A 58 kg man is riding on a 50 kg cart traveling at a speed of 3.1 m/s. He jumps off with zero horizontal speedrelative to the ground. What is the resulting change in the cart's speed
A 6kg sled is traveling across the ice at a speed of 9m/s when a12kg package is dropped into it from above (assume the package falls completely vertically and sticks to the sled). What is the speed of the sled after this “collision”?
during takeoff an airplanes angle of ascent is 18 degrees and its speed is 275 feet per second. find the planes
The speed of an alpha particle is determined to be3.45×106 m/s. If all of its kinetic energy isacquired by passing through an electric potential, what is the magnitude of that potential?
A box of 350N weight is at rest at the bottom of the plank that is 6.0m long and rises 30 degree above the ground. what is the velocity of the box at the top of the plank
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