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a projectile is fired horizontally from a gun that is 450 mabove flat ground the muzzle velocity is 250 msa how long
a freezer is used to freeze 20 l of water completely into ice the water andthe freezer remain at a constant temperature
a pulley wheel that is 220 cm indiameter has a 52 m long cord wrappedaround its periphery starting from rest the wheel
a hollow aluminum cylinder 190cm deep has an internal capacity of 2000 l at 240degc it is completely filled
a wire 500 cm long carries a 05 a current in the positivedirection of an x axis through a magnetic field b 300 mtj 100
a 30 kg particle with velocity v 50 msi - 60 ms j is at x 30 m y 80m it is pulled by a 70 n force inthe negative x
a boy is laying on a sled wich is on an ice covered hillinclined at an anlge of 15 degrees if the boy and the sled have
a barge with a mass 150 x 105 kg is proceeding down river at62 ms in heavy fog when it collides broadside with a
an ice skater spinning with outstreched arms has an angular sped of 40 rads she tucks her arms in decreasing her
a large cylindrical roll of paper of initial radiusr lies on a long horizontal surface the outside end of thepaper is
a 20kg satellite has a circular orbit with a period of 24 h and aradius of 80 times 106m around a planet of unknown
it is well known that bullets and other missiles fired atsuperman simply bounce off his chest suppose that a
the angular momentumof a flywheel having a rotational inertia of 0150 kgm2 aboutits central axis decreases from 400to
if a canon ball is launched with a velocity of 90ms at anangle of 35 degrees how fast is it moving upward and how fast
a football is kicked at ground level with a speed of 150 msat an angle of 400 to the playing field horizontalhow much
an objectweighing 330 n in air is immersed inwater after being tied to a string connected to a balance thescale now
in february 1955 a paratrooper fell 1200 ft from an airplanewithout being able to open his chute but happened to land
a 110 kg ice hockey player skates at 30 ms toward a railingat the edge of the ice and then stops himself by grasping
the angularmomentum of a flywheel having a rotational inertia of 0100 kgm2 aboutits central axis decreases from 340to
a solid copper ball with a diameter of 310 m at sea level is placed at the bottom of theocean at a depth of 100 km if
one way to attack a satellite in earth orbit is tolaunch a swarm of pellets in the same orbit as the satellite but
a 20 kg satellite has a circular orbit with a period of24 h and a radius of 80 times 106m around a planet of unknown
a satellite is placed in a circular orbit aboutearth with a radius equal to one-half the radius of themoons orbit what
a 30 kg particle with velocityv 50 ms i - 60 ms j is at x 30 m y 80 m it is pulled by a 70 n force in the negative x