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a boy throws directly downward in ideally elastic ball from theheight 480m the ball is being bounced from the
when 1250 j of heat are added to one mole ofan ideal monatomic gas its temperature increases from 272 k to 275k find
a magnetic field has a magnitude of 12x10-3 t and anelectric field has a magnitude of 46x103 nc bothfields point in the
a man is pushing a box from behind with a constant net forcef-130n parallel to the ground on the level floor moving it
a radiation detector is in the form of a circular disc of diameter 30cm it is held 25cm from a source of radiation
a steel ball of mass m1 11 kg and a cord of length of l 18 m of negligible mass make up asimple pendulum that can
a spacecraft moving away from earth emits a 4484 hz signal a scientist on earth measures thesignal to be 4479 hz what
in a cloud chamber experiment a proton enters a uniform 0320 rm t magnetic field directed perpendicular to its motion
when monochromatic light shines perpendicularly on a soap film n133 with air on each side the second smallest nonzero
a space traveler moving at a speed of 065c with respect to the earth makes a tripto a distant star that is stationary
suppose you are planning a trip in which a spacecraft is to travelat a constant velocity for exactly eightmonths as
a wagon is rolling forward on level ground friction is negligiblethe person sitting in the wagon is holding a rock the
a youngs slit experiment shows about 15 fringes on either side ofthe center of the diffraction patternwith the eight
a meter stick is found to balance at the 497 cm mark whenplaced on a fulcrum when a 410 gram massis attached at the 80
a 507-g bullet is shot through a106-kg wood block suspended on a string200 m long the center of mass of the block rises
a person is riding a bicycle and its wheels have an angularvelocity of 276 rads then the brakes are applied and the
since 1983 the us mint has coined pennies that are made out ofzinc with a copper cladding the mass of this type of
a ball is thrown and hits a wall with velocity vo and bounces off the wall with velocity vf given contact time what is
a small rock with mass 12kg is fastened to a massless string withlength 080 m to form a pendulum the pendulum is
a skateboarder shoots off a ramp with a velocity of 68 ms directed at an angle of 59deg above the horizontal the end of
a piece of nichrome wire is embedded into a 1-kg block of ice at -10degc a current of 30 amperes and a voltage of 12
copper and aluminum are being considered for a high-voltage transmission line that must carry a current of 54 a the
an eyepiece of 30- cm focal length and an objective of 029-cm focal length are used in a standard microscopewhat power
a rectangular plate is rotating with a constant angular speed aboutan axis that passes perpendicularly through one