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A 1540.0 g mass is ona horizontal surface with μk = 0.31, and is in contact with a massless spring with a force constant of 787.0N/m which is compressed. When the spring is released, it does 2.52J of work on the mass while returning to its equilibrium position. Calculate the distance the spring was compressed.
A galaxy located at a distance D of 1 million light years away has an angular size A= 5 degree. What is the approximate diameter of this galaxy
300. V are applied to a motor with a windings resistance of 65.0 ohms. At the maximum motor speed the back emf is 155. V. Find the current in windings as the motor starts
Find out the maximum torque on the wire. A bullet of mass 5g is fired horizontally into a wooden block of mass 1.26kg resting on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.16.
A ship is floating on a lake. Its hold is the interior space beneath its deck; the hold is empty and is open to the atmosphere. What volume of water per second leaks into the ship
A spring is hung from the ceiling. A 0.459 -kg block is then attached to the free end of the spring. What is the spring constant of the spring
Harmonic light waves are emitted by a source equidistantbetween two narrow vertical slits 0.25 mm apart in a screen. What is the wavelength of the light
Point charges of -8.20 micro Coulombs are placed at each corner of a square that is 0.250m on a side. Find the electric potential at the center of a square
two blocks are connected by a horizontal rope. block 1 has a mass of 20kg and block 2 has a mass of 12kg. determine the acceleration of each block
a 0.346kg glider moves along a frictionless level air track tugged by a mass of 0.050kg suspended vertically over a pulley
You pull a 70 kg block up a 400 incline so that the tension of the rope is parallel to the incline. What is the net work done on the block
Michelle is enjoying a picnic across the valley from a cliff. She is playing music on her radio, what is the intensity of the music arriving at the cliff
Assuming that all the heat generated by the resistor is absorbed by the solid substance, and that it takes 4 minutes to raise the temperature from 20to 80 degrees C, compute the specific heat for the substance.
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