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A wooden board is 2.0 m long and has a mass of 10 kg. Thisboard is supported at each end by cement blocks A and B. Theboard supports a 50 kg mass that is located 0.5 m from the block Bend of the board. Calculate the force of the board on cement block A and on cement block B.
A person lies flat on the sidewalk with her ear to the ground. A limb falls and two distinct sounds are heard, one from the air and the other from the concrete. How far away did the impact occur
a physics instrustor shakes a 2.0 m long alumium rod to create the pattern, find is this a transverse wave or a longtudinal wave
The gravitational potential energy of all the water stored behind avery large dam is 1.2×1016 J, using the base of the damas the reference point for zero PE. Imagine you could store the same amount of potential energy in a system consisting oftwo ..
The electric potential at a position located a distance of 19.8 mm from a positive point charge of 7.80×10-9C, Calculate the value of the second charge
A missile of mass 1.10 102 kg is fired from a plane of mass 5.10 103 kg initially moving at a speed of 3.50 102 m/s. determine is the final velocity of the plane
Starting from rest, a disk rotates about its central axis with constant angular acceleration. In 10 s, it rotates 2 revolutions. What was the angular acceleration during this time
Three identical conducting spheres initially have following charges: sphere A, 5Q; sphere B, -7Q; and sphere C, 0. Spheres A and B is fixed in place, with a center-to-center separation that is much larger than the spheres.
A 15 kg disk of radius 1 m is spinning at a rate of 4 rotations per second. What is its moment of rotational inertia
An electron is a subatomic particle (m = 9.11 x 10-31 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from an initial velocity of +8.11 x 105 m/s to a final velocity of 1.21 x 106 m/s while traveling a di..
A racquet ball with mass m = 0.237 kg is moving toward the wall at v = 12 m/s and at an angle of ? = 30° with respect to the horizontal. What is the change in kinetic energy of the racquet ball
Find the mass flow rate in through the vent in question #1 using the following well-known relationship for the mass flow into an opening:
A ceiling fan is turned on and a net torque of 1.8 N·m applied to the blades. What is the angular acceleration of the blades
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