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A train engine weighs 5 times as much as aflatbed car. If the engine coasts at 3 km/hr into the boxcarthat is initially at rest and becomes coupled to the boxcar, how fast do the two move after the inelastic collision? Show your work.
A HeNe (Helium-Neon) laser has a beam power of 5.00 mW at a wavelength of 656 nm. Assume the beam is focused by a lens to a circular spot whose effective diameter is 15 wavelengths of the light.
In January from Indiana, Andromeda is high in the sky at 6pm local time. (Note that local time is about 40 minutes later than Eastern Standard Time, Where would Andromeda be at midnight local time
in a game of basketball, a forward makes a bounce pass to the center. What horizontal distance does the ball cover before bouncing
A meter stick with mass 90 grams has a 30 gram particle stuck to its center. What is the rotational inertia of the system
the cube of insulating material has the one corner at the origen . each side of the cube has length 0.250m so the top face of the cube is parallel to the xz-plane and is at y=.250m, calculated the net charge enclosed by the cube
The only two forces acting on a body have magnitudes of 20 Nand 36 N and directions that differ by40°. What is the mass of the body
A 48 kg pole vaulter running at 11 m/s vaults over the bar. Her speed when she is above the bar is 1.0 m/s. determine her altitude as she crosses the bar
A plate carries a charge of -2 ?C, while a rod carries a charge of 3.50 ?C. How many electrons must be transferred from the plate to the rod
UV light of wavelength 211 nm falls on a silver surface whose work function is 4.74 eV. Find the maximum speed of the photoelectrons emitted from the surface
An 11.00 kg crate is placed on a horizontal conveyor belt. The materials are such that static friction = 0.47 and kinetic friction = 0.24.
A 1.0mm -diameter, 40cm -long copper wire carries a 3.5A current, What is the potential difference between the ends of the wire
In 2.63 minutes, a ski lift raises four skiers at constant speed to a height of 147 m. What is the average power provided by the tension in the cable pulling the lift
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