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A rocket explodes into three pieces of equal mass. Immediately after the explosion their velocities are (120 m/s, south), (240 m/s, north) and (120 m/s east). What was the velocity of the rocket's center of mass before the explosion?
A simple camera lens with focal object length fO= 3 cm perfectly focuses the the image of an object on a photographic film located a distance 14 cm away from the lens. What is the new magnification
A diffraction grating with 700 lines per centimeter is illuminated by a He-Ne laser of wavelength 633 nm. What is the highest order of diffraction that could be observed with this grating?
What is the average linear speed of Jupiter about the Sun, (The distance from the Sun to Jupiter is 7.78 1011 meters. The orbital period around the Sun is 4332.7 days.)
a water jet is ejected from the nozzle of a fountain with speed vo 12 ms. letting beta 33 degrees determine the rate
A rubber ball (150g) confined to move in the x direction, bounces elastically back and forth at 9m/s between two walls, Calculate the average pressure on this wall
Gas in a cylinder similar to the one shown in the figure moves a piston with area 0.223 m2 as energy is slowly added to the system. find the displacement of the piston
A solid weighs 300N. Calculate the pressure exerted by the solid when it is kept on a glass surface, if the area of contact is 700cm2 . solve the numerical.
A water pipe decreases in diameter from 16 cm to 8 cm. In the wider section the average velocity is 30.0cm/s. determine the volume rate in the narrow section
a weight of 10 n is dropped from a height of 1.2 m onto a spring cushion pad. if the spring has an elastic force
An electron in a hydrogen atom makes a transition from the n=6 energy state to the ground state (n=1)
A Cepheid variable in a nearby galaxy looks 106 times fainter than an identical Cepheid in the Milky Way. How far away is the nearby galaxy
estimate the magnitude of the electric field due to the proton in a hydrogen atom at a distance of 5.29 10-11 m the
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