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a mechanic turns a wrench using a force of 30 n at a distance of 18 cm from the rotation axis the force is
suppose a 15 kg watermelon is hung from a string a bolt with a mass of 30 grams is shot into the watermelon before
a 12 kg wood block is launched up a wooden ramp that is inclined at a 24deg angle the blocks initial speed is 13 ms use
a plane flying horizontally at a speed of 500 ms and at an elevation of 160 m drops a package two seconds later it
an airplane flying directly eastward at a constant rate travels 305 km in 20 ha what is the average velocity of the
if a person of mass m simply moved forward with speed v his kinetic energy would be 12 mv2 however in addition to
a 600-m tall tower casts a 600-m long shadow over a level ground at what angle is the sun elevated above the
an object of mass m 35 kg slides from rest a distance d 6 m down a frictionless inclined plane where it encounters a
a block of mass m 25 kg rests on a frictionless floor it is attached to a spring with a relaxed length l 6 m the
a cart of mass m1 3 kg is attached to a block of mass m2 5 kg by a string that passes over a frictionless pulley the
a heat engine takes in 1000 j of energy at 1000 k and exhausts 615 j at 200 k what are the actual and maximum
a 5 kg block is placed near the top of a frictionless ramp which makes an angle of 30o degrees to the horizontal a
a horizontal force of magnitude f 149 n is used to push a box of mass m 5 kg from rest a distance d 13 m up a
an electromagnetic wave in a vacuum has a maximum magnetic field amplitude of 567times107 ta what is the maximum
copper pennies weighing 25 g have been placed in boiling water at 100 degree celsius an insulated cup holds 100 g of
after placing the iron 0750 kg in the fire and shaping it it is still at 200 c he puts the piece in 8 l bucket of water
an initially stationary box of sand is to be pulled across a floor by means of a cable in which the tension should not
a centrifuge is a device in which a small container of material is rotated at a high speed on a circular path such a
halleys comet which passes around the sun every 76 years has an elliptical orbit when closest to the sun perihelion it
a spiders web can undergo shm when a fly lands on it and displaces the web for simplicity assume that a web obeys
a small birds wings can undergo a maximum displacement amplitude of 500 cm distance from the tip of the wing to the
a small device based on the confinement of a proton in a 1 dimensional box is found to have a ground ie n 1 level
an anchor made of cast iron of bulk modulus 600 times 109 pa and of volume 0230 m3 is lowered over the side of the ship
starting from rest a boulder rolls down a hill with constant acceleration and travels 400 during the first second how
a discus thrower with arm length of 12 m starts from rest and begins to rotate counterclockwise with an angular