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A 60 kg person jumps from rest off a 5m high tower straight down into the water. Neglect air resistance during the descent. She comes to rest 3 m under the surface of the water. Determine the average force that the water exerts on the diver.
A ping-pong ball of mass 4 gm and traveling with a velocity of 4 m/s collides with stationary tennis ball of mass 5 gm. Calculate the magnitude of the velocity of the tennis ball after the collision
An elevator at the CN Tower in Toronto, Canada, What is the minimal power required for the motor of the elevator
The catapult on an aircraft carrier can take an aircraft weighing 300,000 N from 0 to 84.1 m/s in 9.3 seconds, What is the acceleration of the aircraft
How much time has elapsed between the two measurements.
A 58 ice cube can slide without friction up and down a 28 slope. The ice cube is pressed against a spring at the bottom of the slope, When the ice cube is released
A gymnast of mass 69.0 kg hangs from a vertical rope attached to the ceiling. You can ignore the weight of the rope and assume that the rope does not stretch. Use the value 9.81 for the acceleration of gravity.
A 145 g copper bowl contains 205 g of water, both at 20°C. A very hot 300 g copper cylinder is dropped into the water, causing the water to boil, with 5.40 g being converted to steam.
A perfect cube with sides of 9.0cm is placed so that one corner is at the origin and its faces are parallel to the coordinate planes, find the total charge located within the cube
A daring ranch hand sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. What must be the horizontal distance between the saddle and limb when the ranch hand makes his move
A 386 g object is attached to a spring andexecutes simple harmonic motion with a period of 0.240 s. If the total energy of the system is5.48 J. Find the maximum speed of the object
Three resistors, R1 = 30? , R2 = 71? , and R3=R, are connected in parallel with a 12Vbattery, Find the value of resistance R and currenrt through each resistor
A cannon, placed in the valley, fires a shell at 52 degrees with respect to the horizontal line. The initial speed of the shell is 516 m/s, Calculate the range of the shell
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