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The only force acting on a particle is conservative force . If the particle is at point A, the potential energy of the system associated with and the particle is 50 J. If the particle moves from point A to point B, the work done on the particle by is +18 J. What is the potential energy of the system with the particle at B?
What is the speed of the 2 cars as they move together after the collision.
The system is balanced by a support that is 0.300m from the left end of the plank. How far to the right of the support is the plank's center of gravity.
Consider a particle of spin 1/2 in a magnetic field B= (0, 0,B0). If the initial spin state of the electron is X+ = (1,0), then the Larmor precession:
A 2.1 ? 103-kg car starts from rest at the top of a 4.5-m-long driveway that is inclined at 15° with the horizontal. find the speed of the car at the bottom of the driveway
question1a diver springs upward from a board that is 2.85 meters above the water. at an instant she contacts the water
A block of mass m = 8 kg is pushed across a rough table with a force applied at an angle of 40 with respect to the horizontal direction, what is the work done by friction
A boat must cross a 260-m-wide river and arrive at a point 110 m upstream from where it starts, What is the speed of the boat in still water
Treat a cell in a human as a sphere of radius 1.0 µm. What's the volume of the cell
Two 500 g spheres with equal positive charges are suspended by 10.0 cm long strings in a uniform electric field E = 2.00 x 106 N/C, If the charged spheres are in equilibrium when their strings make angles of 20.0. with the vertical, determine the c..
Some bacteria are propelled by motors that spin hair-like flagella. How long does it take the motor to make one revolution
A 26 kg gun is standing on a frictionless surface. The gun fires a .0573 kg bullet with a muzzle velocity of 323 m/s. The positive direction is that of the bullet immediately after the gun was fired. compute the momentum of the gun immedately afte..
82 L of an ideal monatomic gas is at an absolute pressure of 4.2 atm when the temperature is 25 C. what is the change in the internal energy of the gas
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