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A 60-kg bungee jumper has fallen far enough that her bungee cord is beginning to stretch and resist herdownward motion. Find the force (magnitude and direction) exertedon her by the bungee cord at an instant when her downwardacceleration has a magnitude of 6.3m/s2. Ignore the effects of air resistance.
A sinusoidal electromagnetic wave from a radio station passes perpendicularly through an open window that has area of 0.600m^2. How much energy does this wave carry through the window
a 8.4 kg mass is attached to a light cord that passes over a massless frictionless pulley. the other end of the cord is
The pressure inside a gas bottle at 23.4 °C is 4350 kPa. What will be the pressure inside the bottle
If the magnitude of the drift velocity of free electrons in a copper wire is 6.28 10-4 m/s, what is the electric field in the conductor
For a movie scene, a 76kg stuntman drops from a tree onto a 51kg sled that is moving on a frozen lake with a velocity of 13m/s toward the shore. with what speed does he leave the sled
two untethered astronauts at rest are in space when one pushes off the other. How far apart are the two astronauts after 1 minute
One can not align the apparatus to eliminate entirely the effects of the Earth's magnetic field. calculate the component of the earth magnetic field perpendicular to the entering electron beam
A thin, uniform rod is hinged at its midpoint. To begin with, one half of the rod is bent upward and is perpendicular to the other half. What is the angular velocity of the straight rod
A person pulls a toboggan for a distance of 37.8 m along the snow with a rope directed 26.7 ° above the snow. The tension in the rope is 99.2 N. How much work is done on the toboggan by the tension force
What is the stopping distance when the surface is dry and the coefficient of friction is 0.620.
A sustained force of 52N moves a model airplane 22m along its runway to provide the required speed for takeoff
A small 0.300-kg object moves on a frictionless horizontal table in a circular path of radius 2.40 m. what is the radius of the smallest possible circle on which the object can move
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