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Problem: A crate slides up a frictionless slope. At the end of 3 seconds its velocity is 20.0m/s; at the end of 8 seconds its velocity is 0 m/s. What is the angle of the slope. Please answer the following question.
While they are similar in many ways, there are differences between the beam of light from a flashlight and the beam of light from a laser. What are these differences
The inside of the gun barrel is coated with Teflon, so the average friction force will be only 40 N during the 4.0 m he moves in the barrel. At what speed will he emerge from the end of the barrel, 2.5 m above his initial rest position?
A 5 g bullet has a speed of 220 m/s and embeds itself into a 650 g block. What is the speed of the block after the collision
X-rays with a wavelength of 7.02 x 10^-12 m strike a stationary electron and the reflected photon is scattered 75 degrees relative to the incident photon. What is the wavelength of the scattered photon?
There is a square with 4 charges. q3 is 3x10^-6 C and in the top left q4 is -2x10^-6 C and in the top right q2 is 2x10^-6 C and in the bottom left q1 is 4x10^-6 C and in the bottom left The distance between each charge on the outer edge of the squ..
A certain source of soundwaves radiates uniformly in all directions. What is the total acoustic power output of the source
the resistance of a very fine tungsten wire with a 10 micro m x 10micro m square cross section is 2978 ohm how long is
An asteroid of mass 59,000 kg carrying a negative charge of 12.0 μC is 170 m from a second asteroid of mass 58,000 kg carrying a negative charge of 15.0 μC
if you throw a ball upward with an initial speed of 4m/s at 1.5 above the ground, find the final velocity just before touching the ground
After driving around and undergoing a displacement of ?rx = 27.7 km and ?ry = -14.5 km, a driver finds herself at position r2x = -31.9 km and r2y = 15.7 km. What were the components of the driver\'s initial position vector, r1x and r1y, in kilometers..
Calculate the electric flux through a rectangular plane 0.350 m wide
Two speakers emit sound of identical amplitude and frequency, in phase with each other. The frequency is 415 Hz. If the speakers are 9.00 meters apart, and you stand on the line directly among them, 3.47 m from one speaker, are you standing closer to..
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