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several children are on a sled pulled by a four-wheeler across a level snow-covered field the sled is moving at a
halleys comet which passes around the sun every 76 years hasan elliptical orbit when closest to the sun perihelion it
a skateboarder starts from the side of a circular ramp of radius r 4 m and travels downward he would like to have the
a small sphere with a mass of 441 g is moving upward along the vertical y-axis when it encounters an electric field of
dinah is playing cards with her friends and it is her turn to deal a card has a mass of 23 g and it slides 035 m
an object with a mass of 40 kg travels with a constant velocity of 85ms northward it is then acted on by a force of 50n
a runner traveling with an initial velocity of 15 ms accelerates at a constant rate of 16 ms2 for a time of 3 secondsa
a long horizontal hose of diameter 56 cm is connected to a faucet at the other end there is a nozzle of diameter 1 cm
two masses m1 333 kg and m2 543 kg are on a frictionless tabletop and mass m3 879 kg is hanging from m1 the
transformer 1 has a primary voltage and a secondary voltage transformer 2 has twice the number of turns on both its
how do you find the period of a binary star system exact question is a binary star system consists of two stars of
a speedboat starts from rest and accelerates at 242 ms2 for 871 s at the end of this time the boat continues for an
what is the mass of the core of the sun what percentage of the present mass of the core of the sun is
you are designing a hydraulic lift for an automobile garage it will consist of two oil-filled cylindrical pipes of
a 457-cm diameter disk rotates with a constant angular acceleration of 30 rads2 it starts from rest at t 0 and a line
a ball on the end of a string is whirled around in a horizontal circle of radius 0471 m the plane of the circle is 137
radar is used to scan for airplanes near an airport if an airplane is 10 km from the airport what is the round-trip
a disk and a hoop of the same mass and radius are released at the same time at the top of an inclined plane the height
a typical ten-pound car wheel has a moment of inertia of about 035kg m2 the wheel rotates about the axle at a constant
a dolphin at seaworld is to jump through a hoop held in the air by a trainer the dolphin leaves the water at an angle
a block of wood of mass m1 100 kg slides to the right on a frictionless horizontal table with a speed of 3000 ms it
one point-like charge of -20 nc is placed 3 cm away from a very large planar sheet of charge the surface charge density
write an explanation of how you can predict the motion of a charged hockey puck that is moved by other charged pucks
in a certain region the earths magnetic field has a magnitude of 47 x 10-5 t and is directed north at an angle of 42deg
a 0400 rm kg glider is moving to the right on a frictionless shyhorizontal air track with a speed of 0850 rm mrm s when