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The frequency of light reaching Earth from a particular galaxy is 25.0% lower than the frequency the light had when it was emitted.
What is the speed of this galaxy relative to the Earth?
If a mass of 1 kg is accelerated 1 m/s2 by a force of 1 N, illustrate what would be the acceleration of 10 kg acted on by a force of 20 N?
A uniform, cylindrical pulley of mass M=12.7 kg and radius R=0.636 m rotates freely about a fixed horizontal axis. What is the magnitude of the angular acceleration of the pulley
A 55-kg swimmer is standing on a stationary 210-kg floating raft. The swimmer then runs off the raft horizontally with a velocity of +4.6 meter per second relative to the shore. Calculate the recoil velocity that the raft would have if there were ..
A rocket-powered hockey puck has a thrust of 1.50N and a total mass of 1.40kg. How far does the puck land from the base of the table
A point charge is outside of a spherical surface and no charge is enclosed by that surface, What is the flux through the entire closed surface
An electron has an initial velocity of 3.50 106 m/s in the x direction. It enters a uniform electric field = (400 N/C) , which is in the y direction. (a) Find the acceleration of the electron.
A hiker weighing 565 N carries a 186 N pack up Mt. Whitney (elevation, 4420 m), increasing her elevation by 3000 m. Find the minimum internal work done by the hiker's muscles
A bullet of mass 5.0 g is fired horizontallyinto a 2.3 kg wooden block at rest on a horizontal surface. At what speed is the bullet fired
A light bulb is connected to a 120.0-V wall socket. The current in the bulb depends on the time t according to the relation I = (0.839 A) sin [(204 Hz)t]. Determine the resistance of the bulb's filament
find the minimum diameter of an l 19.3 m long steel wire that will stretch no more than 8.20 mm when a mass of 304 kg
For a very simple model, consider a solid iron sphere 2.00 cm in radius. Assume the temperature is always uniform throughout its volume. Find the energy of one photon
An object with total mass mtotal = 16.7 kg is sitting at rest when it explodes into three pieces. Calculate the increase in kinetic energy of the pieces during the explosion
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