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(a) Evaluate the kinetic energy that the earth has because of its rotation about its own axis. For comparison, the total energy used in the United States in one year is about 9.33 109 J.
(b) Evaluate the kinetic energy that the earth has because of its motion around the sun.
Suppose you're skiing up a 20m tall slope at the indicated angle of inclination. What minimum initial speed must you have at the bottom to just make it to the top
An iron bolt of mass 70.0 g hangs from a string 35.2 cm long. The top end of the string is fixed. Find the magnetic force on the bolt
A cord of length 1.0m has two equal-length sections with linear densities of 0.50 kg/m and 1.00 kg/m The tension in the entire cord is constant. What is the ratio of the oscillatory frequencies
a rocket is flying level at standard sea level conditions and the mach number indicated is .985. calculate the speed of
A metal wire 1.3mm in diameter and 1.8m long hangs vertically with a 5.4-kg object suspended from it. what is the value of the Young's modulus for the metal
find the angular displacement of the propeller.
an electron is accelerated by a constant electric field of magnitude 285 nc.a find the acceleration of the electron.b
Your projectile launching system is partially jammed. It can only launch objects with an initial vertical velocity of 42.0 m/s, though the horizontal component of the velocity can vary.
A wooden block of mass m = 9 kg starts from rest on an inclined plane sloped at an angle from the horizontal. find the magnitude of the kinetic frictional force on the block
To stretch a certain spring by 2.50cm from its equilibrium position requires 9.00J of work, What was the maximum force required to stretch it by that distance
A point particle has a charge equal to +2.30 μC and isfixed at the origin.a) What is the electric potentialV ata point 3.80 m from the origin assuming that V = 0 at infinity?
A potential difference of 14.0 V is applied across a wire of cross-sectional area 5.01 mm2 and length 745 km. What type of wire is this
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