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The Earth's gravity pulls on the Moon, causing it to orbit. However, by Newton’s third law, it is known that the Moon exerts a force back on the Earth. Therefore, the Earth should move in response to the Moon. Thus a more accurate statement is, "The Moon and the Earth both orbit the center of mass of the Earth-Moon system. In this problem, you will calculate the location of the center of mass for the Earth-Moon system, and then you will calculate the center of mass of the Earth-Moon-Sun system. The mass of the Moon is 7.35×1022kg , the mass of the Earth is 6.00×1024kg , and the mass of the sun is 2.00×1030kg . The distance between the Moon and the Earth is 3.80×105km . The distance between the Earth and the Sun is 1.50×108km . Calculate the location x_cm of the center of mass of the Earth-Moon system. Use a coordinate system in which the center of the Earth is at x=0 and the Moon is located in the positive x direction. Express answer in kilometers to three significant figures
grinding wheel is initially at rest. A constant external torque of 47.2 N· m is applied to the wheel for 18.8 s, Find the moment of inertia of the wheel
A 45 kg girl is standing on a 130 kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of 1.33 m/s relative to the plank.
in 1910 rutherford performed a classic experiment in which he directed a beam of alpha particles at a thin gold foil.
A billiard ball moving at 6.00 m/s strikes a stationary ball of the same mass. After the collision, the first ball moves at 4.94 m/s at an angle of 34.5° with respect to the original line of motion, find the struck ball's velocity after the collisi..
True false questions on physics
A rectangular loop lies next to a long straight wire, on the same plane. Both wires carry a current of 3A. find the magnitude and the direction of the net force on each loop
X rays with a wavelength of 0.18 nm undergo first-order diffraction from a crystal at a 74 degree angle of incidence
question1a student has two ramps both of that are at an angle 25deg. ramp 1 is frictionless and ramp 2 has friction.
Consider a thin ring of radius a with uniform charge density and total charge Q. The ring is cut in half across the diameter and the two halves superimposed to double the effective charge density. Calculate the electric field at a point 4a from the r..
For many years Colonel John P. Stapp, USAF, held the world's land speed record. He participated in studying whether a jet pilot could survive emergency ejection.
One of the Niagara turbines uses 172,000 cubic feet of water perminute under a head of 215 ft. What is the horsepower developed
What is the separation distance between speaker and listener
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