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a 76 man weighs himself at the north pole and at the equator how much higher is the scale reading in the north pole and
two blocks are connected by a horizontal rope block 1 has a mass of 20kg and block 2 has a mass of 12kg the horizontal
a 900kg car is initially moving with a speed of 30 ms when it applies its abs brakes to come to a stop the coefficients
a set of narrow vertical slits is located a distance d from a screen the slits are equally spaced and have the same
a 5000kg rocket takes off from the surface of the earth with an initial speed of 20ms the rocket uses its engine to
the steel i-beam in the drawing has a weight of 351 times 103 n and is being lifted at a constant velocity what is the
a small ball is launched with a speed of 40 ms and an angle of 30 degrees toward the building shown the height of the
a small ball is thrown with a speed of 15 ms downward from the top of a 50 meter tall buildinga determine the time the
a small stone is dropped from the top of a building and strikes the ground 2 seconds latera determine the height of the
in a typical lightning flash the potential difference between the cloud and the ground is 109 v and the charge
a small ball is thrown from the top of a building shown vertically up into the air the initial speed of the ball is
when on the ground ians weight is measured to be 700 n when ian is on an elevator his apparent weight is 805 n what is
at a height of 1500m a dive bomber in a vertical dive at 300 kmh shoots a cannon at a target on the ground relative to
the world record for a high jump from a standing position is 190 m with what speed must a jumper leave the ground to
a small airplane accelerates from rest at a constant acceleration of 12 ms2 along the runway the plane rises from the
an automobile accelerates from rest for 20s with a constant acceleration of 15 ms2 what is its final velocity how far
the front end of an automobile has been designed so that upon impact it progressively crumples by as much as 70m
a cube of mass m 715 kg is placed on an inclined plane of mass m 667 kg which makes an angle 4830deg with the
a jet takes off from sfo to yul the distance between the airports is 4100 km after a 1 hour layover the jet returns to
a carnot heat engine takes 89 cycles to lift a 15 kg mass a height of 15 m the engine exhausts 16j of heat per cycle
the coil of a galvanometer has a resistance of 216 and its meter deflects full scale when a current of 558 ma passes
a billiard ball moving at 580 ms strikes a stationary ball of the same mass after the collision the first ball moves at
a roller coaster reaches the top of the steepest hill with a speed of 60 kmh it then descends the hill which is at an
light travels a distance of 0945m in 450ns in a given substancewhat is the index of refraction of this
a projectile is fired with an initial muzzle speed 440 ms at an angle 45 from a position 6 meters above the ground