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a model rocket is fired vertically from rest it has a net acceleration of 185 ms2 after 13 s its fuel is exhausted and
the initial speed of a cannon ball is 020 kms if the ball is to strike a target that is at a horizontal distance of 30
an elevator cable winds on a drum of radius 800 cm that is connected to a motora if the elevator is moving down at 060
an object is placed at a distance of 28 cm from a thin convex lens the lens has a focal length of 9 cm what are the
a circular wire loop of area 018m squared carries a current of 4 a the coil lies in a horizontal plane with the current
a 20 micro f capacitor is connected to a 60 v battery and becomes fully charged the battery is removed and a slab of
if a 50 ohm toaster is connected in parallel to two 120 w bulbs and 120 v is applied across the light bulbstoaster
a coin slides over a frictionless plane and across an xy coordinate system from the origin to a point with xy
an electric fan is turned off and its angular velocity decreases uniformly from 500 revmin to 200 revmin in a time
a weight lifter raises a 1093 n weight a vertical distance of 160 m in a time interval of 205 s compute the power
a spring with a force constant of 1645 nm is compressed 111 cm find the work done by the force compressing the
at the intersection of texas avenue and university drive a yellow subcompact car with mass 950 kg traveling east on
force of a baseball swing a baseball has mass 0145 kga if the velocity of a pitched ball has a magnitude of 450 ms and
man pulls a block of mass m 15 kg up an incline at a slow constant velocity for a distance of d 45 m the incline
a solid uniform sphere of mass 20 kg and radius 17 m rolls without slipping down an inclined plane of height 67 m what
a golf ball of mass 05 kg is at rest on the tee and has a velocity of 102 ms immediately after being struck if the club
suppose that a 100 cm3 box in the shape of a cube is perfectly evacuated except for a single particle of mass 121 10-3
a container of cross-sectional area 102 cm2 contains liquid of density 150 gcm3 to a height of 590 cm above a small
a a 110 kg mass is at the center of a uniform spherical shell of mass 109 1020 kg and radius 105 106 m find the
suppose you carry a bag of groceries weighing 100 n from your car to your kitchen a distance of 61 m without raising or
two blocks each of mass m 24 kg are pushed along the horizontal surface of a table by a horizontal force p of
a 850-kg block of ice released from rest at the top of a 141--long frictionless ramp slides downhill reaching a speed
starting from rest a car travels 1 350 meters in 100 minute it accelerated at 10 ms2 until it reached its cruising
two newly discovered planets follow circular orbits around a star in a distant part of the galaxy the orbital speeds of
a jet plane is flying with a constant speed along a straight line at an angle of 300 above the horizontal the plane has