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A shell is shot with an initial velocity of 27 m/s, at an angle of θ0 = 60° with the horizontal. At the top of the trajectory, the shell explodes into two fragments of equal mass. One fragment, whose speed immediately after the explosion is zero, falls vertically. How far from the gun does the other fragment land, assuming that the terrain is level and that the air drag is negligible?
Water flowing out of a horizontal pipe emerges through a nozzle. The radius of the pipe is 2.5 cm, and the radius of the nozzle is 0.46 cm. determine the absolute pressure of the water in the pipe
while standing in a low tunnel you push up on the ceiling with a force of 100N. your mass is 70kg. What force does the floor exert on you
Some enterprising physics students working on a catapult decide to have a water balloon fight in the school hallway. At what angle must they be launched to just graze the ceiling
a monkey escapes from the zoo and climbs a tree. after failing to entice the monkey down the zookeeper fires a
Power to a cooling fan is turned off when it is turning at 720rpm. The fan makes 1350 revolutions before it comes to rest. Calculate the fan's average angular acceleration
A sodium atom (Z = 11) contains 11 protons in its nucleus. Strictly speaking, the Bohr model does not apply, determine the corresponding radius r of the outermost Bohr orbit
Monochromatic light is incident on a diffraction grating and the first maximum is observed at an angle 5.2 degrees. At what angle is the 4th maximum seen
Based on this information and what you learned in this chapter about the action potential, estimate the total number of sodium ion channels in the membrane of a nerve cell
The force on a thin wire from A to B is 500 Ib. What are the magnitude of the force parallel and Perpendicular to an axis line that starts at the origin and goes to the point C ( -2i+7j+3k)m ?
a mass m neutron has elastic collision with a mass m' stillnucleus. How much kinetic energy does the neutron lose
Water flows over asection of Niagara Falls at a rate of 1.20 × 106 kg/sand falls 50.0 m. What is the power dissipated bythe waterfall
The edge of the thimble of a micrometer moves a distance of 2.0 mm when it is given four complete revolutions. Find the pitch of the micrometer. If the number of divisions on the circular scale is 50, calculate the least count of the micrometer. U..
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