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A beam of protons moves in a circle of radius 0.25m. The protons move perpendicular to a 0.23T magnetic field. What is the speed of each proton? 5.5x10^6 m/s is the answer
At a playground you let your kid sister (30 kg) kneel on the surface (near the edge) of a 2.5 meter diameter merry-go-round. What is the constant angular acceleration
A liquid of density ρ is poured slowly on top to push piston down. How far will the piston push down
A passenger walks from one side of a ferry to the other as itapproaches a dock. what are the direction and magnitudeof the ferry's velocity relative to the water
If a car travelling at 63 km/h will skid 18 m when its brakes lock, how far will it skid if it is travelling at 150 km/h while its brakes lock.
A 0.200 nm photon collides with a stationary electron. After the collision, the electron moves forward and the photon recoils backward. Discover the momentum and the kinetic energy of the electron.
A solid disk of mass M = 3.5 kg and radius R = 0.86 m rotates in the z-y plane as shown. Write an expression for the magnitude of the net torque required for the disc to achieve a given rotational speed when starting from rest in terms of M, R, ?, ..
a tennis player swings her 1200 g racket with a speed of 10.9 ms. she hits a 60 g tennis ball that was approaching her
An electric stove burner with 35-ohm resistance consumes 1.5 kW of power. At what voltage does it operate
A rock is thrown vertically up to the air. It reaches a maximum 15 m above the point where it was released. What is the initial velocity.
At an amusement park there is a ride in which cylindrically shapedchambers spin around a central axis. People sit in seats facing the axis, their backs against the outer wall. At one instant the outerwall moves at a speed of 3.5 m/s, and an83 kg pers..
An alternating source drives a series RLC circuitwith an emf amplitude of 5.80 V, at aphase angle of +32.5°. what is the potential difference across the inductor
A balance beam has two clockwise torques applied, 22N @ 5.5m, and 110N @ 2.4 m. Balance is achieved with a 55N force. How far is that force from the balance point
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