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a rock is projected from the edge of the top of the building with an initial velocity of 122 ms at an angle of 53
a gardener pushes a 20kg lawnmower whose handle is tilted up 37degrees above horizontal the lawnmowers coefficient of
steam enters a nozzle operating at steady state with p 40 bar and t 400oc and a velocity of 10 ms the steam flows
an 90 m 240 n uniform ladder rests against a smooth wall the coefficient of static friction between the ladder and the
a 70 g bullet is fired into a 15 kg ballistic pendulum the bullet emerges from the block with a speed of 200 ms and the
an electric motor turns a flywheel through a drive belt that joins a pulley on the motor and a pulley that is rigidly
a massless spring is hanging vertically and unloaded from the ceiling a mass is attached to the bottom end and released
the distance between the centers of the wheels of a motorcycle is 150 cm the center of mass of the motorcycle including
the head of a grass string trimmer has 100 g of cord wound in a light cylindrical spool with inside diameter 300 cm and
a particle moves on the x axis under the influence of a force proportional to its distance from the origin attracting
a solid cube of wood of side 2a and mass m is resting on a horizontal surface the cube is constrained to rotate about
a spacecraft is in empty space it carries on board a gyroscope with a moment of inertia of ig 240 kg middot m2 about
a full-wave rectifier circuit with a 1k ohm load perates from a 120v rms 60-hz huusehold supply throught a 5-to-1
a rod of length 0850 m is attached to a pivot at one end a force f of 230 n is applied to the end of the bar opposite
the cross-section of a hollow cylindrical conductor with radii a 090 cm and b 470 cm which carries a current 700 amps
a student sits on a rotating stool holding two 32-kg objects when his arms are extended horizontally the objects are 10
gasoline is made up of hydrocarbons suppose 80 of mass of gasoline is carbon and all of this becomes co2 in combustion
assume that a cement truck with a mass of 10000 kg hits you while you were stopped at a traffic light and that you are
for a coal gasification project being planned 26000 tons of coal per day is used to produce 250000000 cubic feet per
suppose the solar insolation is 850 wm2 and you can collect 20 of the energy that fall on the surface of a solar hot
a 920 kg sports car collides into the rear end of a 2300 kg suv stopped at a red light the bumpers lock the brakes are
an object moves according to x 3 m e-2s t y 4 m sin3s t z -5 m cos3st a find its velocity b find its
an electron enters the region between two plates traveling along the x-direction with a speed of v 253x106 ms both
most of the galaxies in the universe are observed to be moving away from earth suppose a particular galaxy emits orange
a classroom window made of glass is 1cm thick the window is 2m square if the thermal conductivity of glass k 096 wmk