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A 10-g bullet moving horizontally with a speed of 2.0 km/s strikes and passes through a 4.0-kg block moving with a speed of 4.2 m/s in the opposite direction on a horizontal frictionless surface. If the block is brought to rest by the collision, what is the kinetic energy of the bullet as it emerges from the block?
A square loop of wire has sides of length 3 cm. A magnetic field points out of the screen; its magnitude is B = 3.0t2y, What is the emf around the square at t = 2.00 s
A block is connected to a spring that is suspended from the ceiling. Assuming air resistance is neglected; explain the energy transformations that occur within the system consisting of the block
A thin, uniformly charged spherical shell has a potential of 533 V on its surface. Outside the sphere, at a radial distance of 24.0 cm from this surface, Calculate the radius of the sphere
0.0024 J of energy are stored in a parallel-plate capacitor whose plates each have area 0.30 m2 and are 1.5 mm apart. What is the electric field energy density between the plates
A block of mass m is slides down africtionless inclined surface. The height of the block changes from h at the top to zero at the bottom of theincline. The block then slides across a frictionless horizontal surface and collides elastically with as..
To reach the rack, the ball rolls up a ramp that rises through a vertical distance of h = 0.547 m. What is the linear speed of the ball when it reaches the top of the ramp
A U-shaped tube is partly filled with water and partly filled with a liquid that does not mix with water. what is the density of the liquid
A cockroach of mass m lands at the center of the disk of a turntable and starts moving towards the edge of the disk with a fix speed while the disk is turning. Find how will the angular velocity change if instead of walking around, the cockroach ju..
A lifeguard is working at a pool sitting in his guard stand. He notices a child right below him drowning that appears to be 1.5 m below the surface of the water? How deep is the child actually? Suppose he is sees the child at a very small angle, and ..
Pulling a string on a bow back with a force of 22.8 lb, an archer prepares to shoot an arrow. find what is the tension in the string
A 2.8nF parallel-plate capacitor has an air gap among its plates. Its capacitance increases by 4.0nF when the gap is filled by a dielectric. What is the dielectric constant of that dielectric?
Three blocks, each having a mass of 1.21 kg, are connected by rigid rods of negligible mass and are supported by a frictionless surface. Forces F1 and F2, of magnitude 4.95 N and 11.6 N respectively, find The magnitude of the force applied by the r..
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