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A pole-vaulter is nearly motionless as he clears the bar, set 4.2m above the ground. He then falls onto a thick pad. The top of the pad is 80 cm above the ground, and it compresses by 50cm as he comes to rest.
A 50.0-g object is attached to a horizontal spring, What is the velocity of the object when it is halfway to the equilibrium position if the surface is frictionless
A dog running in the +y-direction at 7.0 m/s hears its owner call from behind, Compute the dog's change in velocity
Kathy tests her new sports car by racing with Stan, an experienced racer. Both start from rest, Find the distance she travels before she catches him
You are a space traveller and you land on the surface of a new planet. You decide to drill a tunnel through the center of the planet to the opposite side of the planet. How long will it take to make it to the other side of the planet
drop a rock into a well. You hear the splash 2.40 s after you release the rock from rest. How far below the top of the well is the surface of the water
Two similar guitar strings have the same length and mass, but slightly different tensions, If the beat frequency is 1.5 Hz, what is the ratio of the tensions of the two strings
Two protons, moving in a plane perpendicular to a uniform 510 G magnetic field, How much time elapses before they collide again
The engine of a motorboat delivers 29.8 kw to the propeller while the boat is moving at 18.0 m/s . What would be the tension in the towline
A person's prescription for her new bifocal glasses calls for a refractive power of -0.461 diopters in the distance-vision part, & a power of +1.83 diopters in the close-vision part. Compute the near & far points of this person's uncorrected visio..
The specific heat of a certain 50 g metallic block is 900 J/kg K. If the block is at an initial temperature of 80 degrees Celsius, and dropped into a 50 g bucket of water at 1 degree Celsius, Find the final temperature of the system
A 15.9g bullet traveling horizontally at 871m/spasses through a tank containing 14.5kg of water and emerges with a speed of 537m/s
Elements that appear in the same column of the periodic table often share similar chemical properties. In the case of the alkaline earth metals, this is troublesome since the body treats calcium, calculate the path radius of the Ca ion
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