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Calculate the magnitude of the angular momentum of the Earth around the Sun, using the Sun as the origin. The Earth's mass is 5.97 x 1024 kg and its roughly circular orbit has a radius of 1.50 x 1011 m. Use a 365-day year with exactly 24 hours in each day.
A man pulls a 10 kg box across a smooth floor with a force of 58 newton's at an angle of 13 degrees and for a distance of 82meters. How much work to the nearest joule, does he do? Sketch and label the free-body diagram. Compute the friction force in ..
It is found experimentally that the electric field in a certain region of Earth's atmosphere is directed vertically down, Find the net amount of charge contained in a cube 150 m on edge
A railroad freight car weighing 289 kN and traveling at 1.52 m/s overtakes one weighing 207 kN and traveling at 0.910 m/s in the same direction. Find the loss of kinetic energy during collision
The catapult on an aircraft carrier can take an aircraft from 0 to 216 mph in 8 seconds, at which time the aircraft launches
A tennis player receives a shot with the ball of mass 0.060kg travelling horizontally at v=43 m/s and returns the shot with the ball travelling horizontally at 60.00 m/s in the opposite direction.
The only force acting on a 3.0 kg body as it moves along the positive x axis has an x component Fx = -7x N, What is the velocity of the body at x = 4.9 m
At its farthest point, the three-point line is 7.24 meters away from the basket in the NBA. A basketball player stands at this point and releases his shot from a height of 2.05 meters at a 35.0 degree angle.
A particle that is moving in a straight line slows uniformly from 50.0 m/s to 20.0 m/s in 6 second. Determine how far did the particle travel during these 6 seconds
The rotational inertia of a collapsing spinning star changes to 1/4 its initial value. What is the ratio of the new rotational kinetic energy to the initial rotational kinetic energy.
A time-varying horizontal force F(t) = At4 + Bt2 acts for 0.500 s on a 12.25-kg object, starting at time t = 1.00 s. What impulse does this force impart to the object
In the x-y plane, a point of +2.6 uC is on the x-axis at (-3 cm, 0), and a second point charge of -3.4 uC is also located on the x-axis, Determine the Work required (in keV) to move an electron from Pa to Pb
An electron drops from the {\rm L} shell to the {\rm K} shell and gives off an X-ray with a wavelength of 0.0205 {\rm nm}. What is the atomic number of this atom
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