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If a meterstick moves to your right at a constant velocity of 0.8c, what would you measure its length to be? Remember to identify all data (givens and unknowns), list equations used, show all your work, and include units and the proper number of significant digits to receive full credit.
A small coil has a cross section of 3.0 cm2 and consists of 12 turns of wire. What is the torque required to hold the loop
In uniform circular motion, a particle undergoes motion in a circular path with a constant speed. Which of the following statement is false and why?
a particle with mass 2.30 g and charge 10.0 c enters through a small hole in a metal plate with a speed of 8.50 ms at
A spy satellite is in circular orbit around Earth. It makes one revolution in 6.49 hours. How high above Earth's surface is the satellite. What is the satellite's acceleration.
From the "no hair theorem" we know that black holes have only three characteristic external observables, mass, electric charge and angular momentum (except the possible exceptions in the higher dimensional theories).
The speed of a bobsled is increasing, because it has an acceleration of 3.28 m/s2. Find the magnitude of the net force that acts on the bobsled
In the picture below is a proposed roller coaster track. Each car will start from rest at point A and will roll with negligible friction. What is the minimum safe value for the radius of curvature at point B so that the car does not leave the trac..
two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. the orbital speeds
When an object is moving with uniform circular motion, which of the following statements is correct for the tangential velocity? It acts towards the center, It acts away from the center, It is perpendicular to the plane of the circle, or It is per..
A wagon is being pulled up a hill by a running child. Derive the work done by friction on the wagon
A mass of 200 grams stretches a spring 5 cm. The mass is the set in motion from its equilibrium position with an initial downward velocity of 20 cm/sec. assuming that there is no damping, decide the position of the mass at any time t, and decide the ..
An initially stationary box of sand is to be pulled across a floor by means of a cable in which the tension should not exceed 754 N. what is the weight of the sand and box in that situation
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