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A 50 kg rock climber accidentally falls from the side of a rock and freefalls until she is stopped by her 9 m saftey rope. Assuming that the rope stops her completely with no rebound, what is the impulse impared on her body by the rope? If the rock climber's rope took 0.224s to stop her completely after she fell, what was the average force felt by the rock climber as she stopped?
A hydraulic ram 200mm in diameter and 1.2 m long moves wholly within a concentric cylinder 200.2mm in diameter, What is the viscous force resisting the motion when the ram moves at 120mm . s-1
A parallel plate capacitor has plates of area 2.0x10^-3 m^2 and a plate separation of 1.0x10^-4 m. Determine the capacitance of this system if air fills the volume between the plates.
For a temperature increase of ?T1, a certain amount of an ideal gas requires 30 J when heated at constant volume, How much work is done by the gas in the second situation
The coefficient of kinetic friction between the rock and the surface is 0.300. Illustrate what average thermal power is produced as the rock stops?
Two carts have a compressed spring between them and are initially at rest. One of the carts has total mass, including its contents, of 7.0 kg, and the other has total mass of 5.0 kg. If the 5.0 kg cart is moving at 3.0 m/s after the spring is allowed..
Illustrate w hat angular speed (in revolutions per minute) is needed for a centrifuge to produce an acceleration of 720 times the gravitational acceleration 9.8 m/s2 at a radius of 9.95 cm ?
Suppose your waffle iron is rated at 1.20 kW when connected to a 3.00 102 V source. What current does the waffle iron carry
Lightning strikes a point on earth, delivering 20.0 C of charge from cloud to earth across a potential difference of 1.00 108 V. How much energy is delivered to the ground
When an automobile moves with constant speed down a highway, estimate the total frictional force acting on the car
A fan blade, initially at rest, rotates with a constant acceleration of 0.025 rad/s2. What is its angular speed at the instant it goes through an angular displacement of 4.2 rad.
Two 0.70m -long pendulums hang side by side. The masses of the pendulum bobs are 55g and 65g. To what height does the heavier bob rebound
The plates of a parallel-plate capacitor have a separation of 3.68mm , and each has an area of 15.8cm^2. What is the potential difference between the plates
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