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A 91-kg man’s thighbone has a relaxed length of 0.50 m, across-sectional area of 7.0 x 10^–4 m^2, and a Young’s modulus of 1.1 x10^10 N/m^2. By how much does the thighbone compress when the manis standing on both feet?
A 8.76 kg particle with velocity is at x = 3.94 m, y = 9.40 m. It is pulled by a 8.65 N force in the negative x direction. find the rate at which the angular momentum is changing
A track is mounted on a large wheel that is free to turn with negligible friction about a vertical axis. What is the angular speed of the wheel
A parallel-plate capacitor has plates of area A and separation d and is charged to a potential difference, find The inital and final stored energy
a parachutist with a camera descends in free fall At a speed of 14m/s. What is the velocity of the camera just before it hits the ground
At some point in its orbit our asteroid is moving with a speed of 25 kilometers per second. Determine the kinetic energy of the asteroid
A friend of yours who starts out at the same age as you travels to the alpha centauri solar system which is 4.70 light-years away. How fast did she travel
one specific federal funding organization for scientific research and education is the national science foundation nsf.
A toy car with a mass of 120 g moves to the right with a speed of 0.40 m/s. A small child drops a 38.0-g piece of clay onto the car. What is the change in speed of the car
As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air at a speed of 17.0 m/s. find the force he exerts on the ball to give it this upward speed
The current in a 100 watt lightbulb is 0.900 A . The filament inside the bulb is 0.280 mm in diameter. What is the current density in the filament
Draw two diagrams for the situation where a moving train (with initial speed v0) collides elastically with a target train that is not intially moving, Show that the final velocity of each train will be:
The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows with a constant acceleration -5.90 m/s2 for 4.50 s, With what speed does the car then strike the tree
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