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A 3kg object moving in the positive x direction has a one-dimensional elastic collision with a 5kg object initially at rest .After the collision the 5kg object has a velocity of 6m/s in the positive x direction. What was the initial speed of the 3kg object?
When a 5.5 cm long pencil is arranged perpendicular to a convex mirror's optical axis at a distance of 29 cm from the mirror, its image is 2.8 cm tall. (a) What is the mirror's focal length? (b) How tall is the pencil's image if the pencil is move..
You are designing a digital camera, and want each detector element to have a width equal to the distance between the first zeros of the first zeros of the diffraction-limited point spread function
question a proton has a speed of 3.0 x 106 ms in a direction perpendicular to a uniform magnetic field and the proton
A bicycle is turned upside down while its owner repairs a flat tire. A friend spins the other wheel of radius 0.4 m and observes that drops of water fly off tangentially. Find the angular deceleration of the wheel
Medical technicians use small centrifuges to isolate blood cells. How far are the test tubes from the rotation axis
A rod supports a 2.35 kg lamp. a) What is the tension in the rod? b) Estimate the components of the force that the bracket exerts on the rod.
A 55 kg person riding a bike puts all her weight on each pedal when climbing on a hill. How could she exert more torque
A 10 kg block is allowed to slide down a frictional incline for a length of 10 m on an incline of 35. How long is the block in the air
What is the current in the wire.
A 300-g block is dropped onto a vertical spring with spring constant k =180.0 N/m. find the speed of the block just before it hits the spring
A coil of wire is in the plane of the paper. The North pole of a magnet is facing the coil. What is the direction of the current in the wire if the magnet moves away from the wire
A ship is expecting to travel to its home port 650 km due East. Before the ship starts to travel, How far is the ship from its home port
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