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a 60 kg trunk is pushed 40 m at constant speed up a 30deg incline by a constant horizontal force the coefficient of
calculate the electrical potential at the center of the square described as follows four charges are placed at the
the drive propeller of a ship starts from rest and accelerates at 300 x 10-3 rads2 for 270 x 103 s for the next 190 x
consider a resistor series rc circuit with a 67 microf capacitor a 45 times 106 resistor and 38 v emf find the maximum
a force f is applied horizontally to a block of mass 2 kg which nevertheless slides down a frictionless 5-m plane
a planet z has a hole bored in it at its equator and a shaft of light from its star goes straight down that hole to the
an ocean thermal-energy power plant takes in warm surface water at a temperature of 26oc and releases heat at 12oc to
some bacteria are propelled by motors that spin hair-like flagella a typical bacterial motor turning at a constant
a 0958 kg block of copper initially at 300oc is dropped into an insulated container with a large quantity of liquid
after 126 s a spinning roulette wheel has slowed down to an angular velocity of 282 rads during this time the wheel has
a person is riding a bicycle and its wheels have an angular velocity of 106 rads then the brakes are applied and the
during a baseball game a batter approaches the plate the pitcher hurtles the ball in the direction of the batter at a
a spring stretches by 00241 m when a 415-kg object is suspended from its end how much mass should be attached to this
a simple pendulum is made from a 0739-m-long string and a small ball attached to its free end the ball is pulled to one
a tow truck pulls a car 400 km along a horizontal roadway using a cable having a tension of 910 na how much work does
a 1212 n carton is pulled up a frictionless baggage ramp inclined at 270 degrees above the horizontal by a rope
two pith balls are each suspended on two strings of equal length of 95cm from the same point a glass rod that had been
the leader of a bicycle race is traveling with a constant velocity of 114 ms and is 112 m ahead of the second-place
a quantity of ideal gas at 2degc and 80 kpa occupies a volume of 30 m3a how many moles of the gas are presentb if the
a neutron star and a black hole are 2900e12 m from each other at a certain point in their orbit the neutron star has a
the mass of venus is 815 that of the earth and its radius is 949 that of the eartha compute the acceleration due to
a building with a weight of 5200e7 n is built on a concrete foundation with an area of 1300 m2 and an uncompressed
picture a uniform disk with a circular hole cut out of it the disk has a radius of 400 m the holes center is at 200 m
the mass of the ball is 165 kg and the mass of the block is 227 kg the length of the wire is 123 m what is the
in reaching her destination a backpacker walks with an average velocity of 137 ms due west this average velocity