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A 3kg and 2kg cart approach each other on a horizontal air track. they collide and stick together. after collision their total kinetic energy is 40J. what is speed of their center of mass?
A laser beam of unknown wavelength is incident on a single slit of width 0.25 mm and forms a Fraunhofer diffraction pattern on a screen 2.0 m away. The width of the central bright fringe is measured to be about 7 mm.
A glass bead has a total charge of +10 nC. A proton is located at a distance of 3 cm from the center of the glass bead. What is the direction of the force on the proton
Wrongly called for a foul, an angry basketball player throws the ball straight down to the floor. what was the ball's greatest height above the floor
A car with mass of 1000.0 kg accelerates from 0 m/s to 40.0 m/s in 11.0 s. Ignore air resistance. compute the average mechanical power output of the engine
A 0.267 T magnetic ?eld in a mass spectrometer causes an isotope of sodium to move in a circular path with a radius of 0.068 m. what is the isotope's mass
Suppose you make a new kind of compact disk that is the same thickness as a current disk but twice the diameter
question1in a ldquorotor-riderdquo at a carnival people rotate in a vertical cylindrically wallednbspldquoroom.rdquo if
A comet has a very elliptical orbit with a period of 116.1 y. what is its greatest distance from the Sun
The Red Shift is evidence of an expanding Universe. A star like our Sun has a peak wavelength of 518 nm. If the star appeared to have a peak wavelength of 530 nm, find the rate of expansion (velocity) between that star and our Sun.
question 1two astronauts yuri and valentina are flying their rockets towards each other both at a speed of 09c as
92X235 absorbs a thermal neutron and fissions into: 37Y93 and 55Z141. What nucleons are produced by the fission
A passenger train is travelling at 32 m/s when the engineer sees a freight train 384 m ahead of his train travelling in the same direction on the same track. The freight train is moving at a speed of 5.7 m/s.
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