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The coefficient of kinetic friction between the block and the ramp is 0.20. If the distance for the to reach the top of the ramp or the bottom of the ramp are both 10 m, how long will it reach the top or bottom of the ramp after the setup is released? Note the pulley is massless, therefore the tension in the rope in the problem is the same at both sides of the pulley. Angle is 30 degrees, box on the left is 10kg and box hanging on the right is 5 kg.
the sun emits electromagnetic waves including light equally in all directions. the intensity of the waves at the
The meter stick in the drawing can rotate about an axis located at the 20.0-cm mark, Which force, F1 or F2, acts on the meter stick, and what is its magnitude
What is the orbit radius of an electron trapped at the ground state? How many valence electrons are enclosed in the Bohr sphere or in the spherical volume enclosed by the trapped electron orbit?
it takes 4.0 j of work to move two charges from a large distance apart to 3.0 cm from one another. the charges have the
Assume that you are given the choice among two life preservers that are identical in size, the first a light one filled with Styrofoam and the second a very heavy one filled with gravel. If you submerge these life preservers in the water, upon which ..
An electric heater used to boil small amounts of water consists of a 15-Ω coil that is immersed directly in the water. Itoperates from a 120-V socket. How much times is required for this heater to raise the temperature of 0.5 kg of water from 13de..
The rear end of an air conditioner dumps 1.2 * 10^7 J/hr of waste heat into the air outside a building. A fan assists in the removal of this heat. With what temperature does the air emerge
q1. a ski jumper has 1.2 acute 10 j of potential energy at the top of the ski jump. the friction on the jump slope is
A sign has a mass of 1050 kg, a height h = 1 m and a width W = 4 m. It is held by a light rod of length 5 m that is perpendicular to a rough wall. A guy wire at 23° to the horizontal holds the sign to the wall.
A 75 g, 31 cm long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 12 g ball of clay travelling horizontally at 2.1 m/s hits and sticks to a very bottom tip of the rod.
Compute the speed of a proton after it accelerates from rest through a potential dissimilarity of 220V. Compute the speed of an electron after it accelerates from rest through a potential dissimilarity of 220V.
A beam of electrons is incident on two slits separated by a distance of 2.0×10-6 m. Calculate the kinetic energy of the electrons
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