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1 a ball is launched horizontally from a table that is 18m tall if the ball has an initial velocity of 14 ms
a satellite orbits a planet of unknown mass in a circle of radius 23 x 107 m the magnitude of the gravitational force
a top spinning at 400 revs comes to a stop in 640 seconds assume that the top slows down at a constant ratea find the
a nuclear power plant generates 3000 mw of heat energy from nuclear reactions in the reactors core this energy is used
there has long been an interest in using the vast quantities of thermal energy in the oceans to run heat engines a heat
someone throws a rock at a clock 5 meters away from them the rock is thrown at a height of 120cm the velocity that it
an electric vehicle starts from rest and accelerates at a rate of 28 ms2 in a straight line until it reaches a speed of
a damped harmonic oscillator involves a block m2kg a spring k10nmand a damping force f-rv initially it oscillates with
a muon an elementary particle enters a region with a speed of 490 106 ms and then is slowed at the rate of120 1014
a heat engine does 180j of work per cycle while exhausting 440j of waste heatwhat is the engines thermal
an airplane with a speed of 891 ms is climbing upward at an angle of 315 deg with respect to the horizontal when the
a conducting rod whose length is 250 cm is placed on a u-shaped metal wire that has a resistance r of 800 ohms the wire
a 950a current circulates around a 230-mm-diameter superconducting ringa what is the rings magnetic dipole momentb what
a cubic block of lead alloy 01m on a side is placed in a bucket of mercury the surface of the lead is just visible on
suppose l 10 and r 2i 3j 4k and p 10 what is the angle between the radius and momentum
the unpolarized light of intensity inot is passed through two polarizers with axes oriented at 30degrees from each
a crate is dragged 3m across a rough floor at a constant speed by a worker applying 500n at an angle of 30 deg above
jack and a friend skiing in the colorado mountain they first see an avalanche on mountain side 15 miles away from them
a package mass m2kg is dropped vertically from a height h05m onto a horizontal conveyor belt which is moving at a
a uniform thin rod of length 050 m and mass 40 kg can rotate in a horizontal plane about a vertical axis through its
the lengths of the three telescopes are la 456 mm lb 640 mm and lc 787 mm the focal length of the eyepieces is 300
the telescope at yerkes observatory in wisconsin has an objective whose focal length is 194 m its eyepiece has a focal
the distance between the lenses in a compound microscope is 18 cm the focal length of the objective is 15 cm if the
a compound microscope has a barrel whose length is 160 cm and an eyepiece whose focal length is 16 cm the viewer has a
consider an object of mass 01 kg oscilaating on a spring with an x- component of position given by x 2m cos 5st - pi6a