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You decide to drop a bar made of a steel cylinder (Y = 6.0 × 1010 Pa) from a height of 1.20 m (distance between the floor and the bottom of the vertically oriented bar). The bar, of length L = 0.90 m, radius R = 0.0055 m, and mass m = 0.80 kg, hits the ground and bounces up, but manages to stay perfectly vertical. If you assume that its collision is perfectly elastic, and that there is no rotation, what is the maximum compression of the bar?
How much time is necessary to catch the car
Find out vertical and horizontal components
The Earth is constantly being bombarded by cosmic rays, which consist mostly of protons. Assume that these protons are incident on the Earth's atmosphere from all directions at a rate of 1090. protons per square meter per second.
The average depth of Earth's oceans is 2.236 mi. Suppose 68% of the earth is covered in water and that the population of the earth is 6.33 billion. (a) How much water mass on the surface of earth is there per person and (b) to help visualize it, w..
A chair of weight 125 N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 35.0 N directed at an angle of 42.0 below the horizontal and the chair slides along the floor. Using Newton's laws, compute..
An astronaut's pack weighs 18.8N when she is on earth but only 1.95 N when she is at the surface of an asteroid. What is the mass of the pack on the asteroid
Using a 10 percent cost of capital, Smith capitalized the lease on January 1, 2007, in the amount of $125,096. Illustrate what is the amount of current portion of the lease liability Smith should report on the December 31, 2007, balance sheet?
Since you are pulling up a little on the crate, the floor doesn't have to support as much weight. When you are pulling up on the rope as described above, what is the upward force that the floor exerts on the crate.
A massless string runs around two massless, frictionless pulleys. An object with mass m = 12.20 kg hangs from one pulley. A force F is exerted on the free end of the string. What is the magnitude of the force F if the object is lifted at the constant..
A 220 g air-track glider is attached to a spring. The glider is pushed in 12cm against the spring, and then released. A student with a stopwatch finds that 16 oscillations take 11.5.
The resistance of a conductor is 19.2 ohms at 1.50 degress C and 25.0 ohms 91.0 degress C. What is the temperature coefficient of the resistance
A planet of total mass M and radius R has a non-uniform density such that p(r) = po (1-r/R), Determine the gravitational field g(r) at a point r ? R inside the planet
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