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Suppose that the earth is a uniform sphere and that its path around the sun is circular.
1) Compute the kinetic energy that the earth has because of its motion around the sun.
2) Compute the kinetic energy that the earth has because of its rotation about its own axis. For comparison, the total energy utilized in the United States in one year is about 9.33*109 J.
At the Paris Auto Show this week, a concept car by Lamborghini called "Sesto Elemento" (Sixth Element) was being shown. Calculate the average power during the acceleration
An explosion of a 10.0-kg bomb releases only two separate pieces the bomb was initially at rest and a 4.00-kg piece travels westward at 100 m/s immediately after the explosion. What are the speed and direction of the other piece
The area of a typical eardrum is about 5.0x10?5 m2. What is the sound power (energy per second) incident on the eardrum at the threshold of hearing
A river flows due south with a speed of 2.30 . A man steers a motorboat across the river; his velocity relative to the water is 4.40. What is the velocity of the boat relative to the earth
An object is placed 6 cm from a convex spherical mirror by a focal length of 3 cm. Estimate where the image is located and what its characteristics are. Where is the image located? -----cm Is it real or virtual? Is it upright or inverted?
A cart with mass 220 g moving on a frictionless linear air track at an initial speed of 1.0 m/s undergoes an elastic collision with an initially stationary cart of unknown mass. What is the mass of the second cart
The period of a macroscopic pendulum made with a mass of 10 g suspended from a massless string 50 cm long is 1.42 s. Compute the ground-state (zero-point) energy
If a 120g mass was placed at the 25cm mark, and a 20 g mass at the 12 cm mark, where must a 500 g mass be placed to balance the system?
An electron and a proton move on concentric circular path in the plane of your paper, in a magnetic field that is perpendicular to the plane and is oriented towards you. Which particle follows the smaller circle
One of the harmonics of a column of air open at one end and closed at the other has a frequency of 448 Hz, Determine the fundamental frequency of the air column
A 2.1-kg block is released from rest and allowed to slide down a frictionless surface and into a spring. The far end of the spring is attached to a wall, as shown. The initial height of the block is 0.36 m above the lowest part of the slide and the s..
A simple capacitor is made by placing two spheres of radii p at a distance d>>p apart. Find the capacitance of the system of two spheres
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