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Andy ( still 85.0 kg), hits the jump ( at point C, which is 30 meters above the ground) with a speed of 25.0 m/s . If he lands the trick( at the point E, which is on the ground) with a speed of 28.0 m/s, what was the efficiency of the jump ? ( Andy starts at point A, which is 100 meters above the ground).
b) If Andy started down the hill( at point A) with a velocity and reached point C with a velocity of 25.0 m/s, what was the average force of friction acting on Andy as he traveled down the hill from point A to point C ? The angle of the hill between point A and C is exactly 45.0 degrees.
C) If it takes a 2500 W chairlift 1.00 minutes to lift Andy back up to the top of the mountain ( At point A), what is the efficiency of the motor ? Assume that the output energy is Andy's gravitational potential energy at point A.
If a man with blood type B, one of whose parents had blood type O, marries a woman with blood type AB what percentage of their children would be expected?
Assume that block C with mass mC is pushed to the left on a surface with a friction by a horizontally applied force Fapp and that the block is connected by a cord passing through a frictionless pulley to a hanging block D with mass mD
Defibrillators are used to revive a person when their heart has stopped beating. How do they work? What care must the person administering the treatment take
An sub with a mass of 1800 kg is traveling eastbound at 17 m/swhile a compact car with mass of 900 kg is traveling westbound witha speed of 15 m/s the cars collide head-on becoming entangled.
Discuss briefly any pertinent features, such as the behavior of the aforementioned quantities near and far away from the conductor.
A 77 kilogram person stands on a scale in an elevator. Find what does the scale read when the elevator is at rest
The outstretched hands and arms of a figure skater preparing for a spin can be considered a slender rod pivoting about an axis through its center.
The coefficient of friction between a box and the floor is 0.3, and the box has a mass or 12 kg. You push it across the floor at a constant velocity or 1.2 m/s.
During a testing process, a worker in a factory mounts a bicycle wheel on a stationary stand and applies a tangential resistive force of 115N to the tire's rim. what force must be applied to the chain
Two small spheres spaced 20centimetres apart have equal charge. How many excess electrons should be present on each sphere if magnitude of the force of repulsion between them is newtons.
Two circular coils of current-carrying wire have the same magnetic moment. The first coil has a radius of 0.095 m, What is the radius of the second coil
How much voltage must be used to accelerate a proton (radius 1.2x10^-15m ) so that it has sufficient energy to just penetrate a silicon nucleus? A silicon nucleus has a charge of , and its radius is about 3.6 x10^-15m. Assume the potential is that fo..
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