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A force of 100 N is applied to a 50 kg mass in the direction of motion for a distance of 6.0 m and then the force is increased to 150 N for the next 4.0 m. for 10m of travel, how much work is done by the varying force?
directed into the plane of the computer screen as shown in the figure. Identify the magnitude and direction of the resultant magnetic field at P.
At its Ames Research Center, NASA uses its large "20-G" centrifuge to test the effects of very large accelerations ("hyper gravity") on test pilots and astronauts. In this device, an arm 8.84 {rm m} long rotates about one end in a horizontal plane..
A basketball player makes a jump shot. The 0.650-kg ball is released at a height of 1.90 m above the floor with a speed of 7.17 m/s, What is the work done on the ball by air resistance, a nonconservative force
What is the friction force that acts on the firefighter?
The second person, on the opposite side of the lock, pulls at an angle of 45o. Illustrate with what force should the second person pull so that the net force on the raft is in the forward direction?
An iron bar 40 cm long is braised to a copper bar 50 cm long and of the same diameter. What is the heat flow down the rod if its cross-sectional area is 2.50 cm2
What is an initial velocity of the boulders
Assume the Earth is in uniform cicular motion about the sun. Explain how to determine the angular velocity of the Earth
A falling sphere viscometer measures the viscosity of a liquid from the terminal velocity of a tiny, falling sphere, what is the shear viscosity of the liquid
What amplitude of simple harmonic motion of the spring-blocks system puts the smaller block on the verge of slipping over the larger block.
Two children setup a "telephone" by placing a long, slender aluminium (Y = 6.9 × 1010 N/m2) bar that has a length of 6.1-m between their two houses. To communicate, the child taps a coded message on one end. How long do the sound waves take to reach ..
How much time does the stone take to reach the ground.
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