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How deep does a point in the middle of the floor of a4-m-deep pool appear to a person standing 2.8 meters horizontally from the point? Take the refractive index for the pool to be 1.3 and for air to be 1. (Assume the person is standing in the pool with their eyes just above the level of the water.)
A dive bomber has a velocity of 230 m/s at an angle theta below the horizontal. When the altitude of the aircraft is 2.15 km, it releases a bomb, Find the angle theta
When the coil of a motor is rotating at maximum speed, the current in the windings is 4.33 A. When the motor is first turned on, calculate the resistance of the windings.
A 3000 kg mass moves West at 4.5 m/s and a 4000 kg mass moves South at 3.2 m/s. Find the magnitude and direction of the wreckage
suposse that a ferrari and a porsche begin a race with a moving start and each moves with constant speed. one lap of
A couple of astronauts agree to rendezvous in space after hours. Their plan is to let gravity bring them together. Find the his and her initial acceleration
Sam (68.3 kg) and Alice (41.5 kg) stand on an ice rink, providing them with a nearly frictionless surface to slide on. Sam gives Alice a push, Calculate the change in the kinetic energy of the Sam-Alice system
A woman passes through a revolving door with a tangential speed of 1.6m/s if she Is 70 m from the center door, what is the door angular speed
The latent heat of fusion
An electromagnetic eve has an electric field with a peak value of 150 N/C. What is the average intensity of the wave
Two same-size metal posts, one aluminum and one copper, are subjected to equal shear stresses. which post will show the larger deformation angle
A submarine is 302 m horizontally out from the shore and 132 m beneath the surface of the water. What is the height of the building
A 3.00kg block starts from rest at the top of a 30.0 degree incline and slides a distance of 2.00m down the incline in 1.50s. Find (a)the magnitude of the acceleration of the block, (b) the coefficient of kinetic friction between block and plane, (c)..
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