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a 24 m long pendulum is released from rest when the support string is at an angle of 25deg with the vertical what is
a glider of mass 0155 is moving to the right on a frictionless horizontal air track with a speed of 0730 it has a
an archer pulls his bow string back 0440 m by exerting a force that increases uniformly from zero to 224 na what is the
the coefficient of static friction between the m 340 kg crate and the 350deg incline is 0300what minimum force must be
a circular loop of flexible iron wire has an initial circumference of 167 cm but its circumference is decreasing at a
a 4-turn coil 20cm in diameter is rotated at 20 revs about an axis perpendicular to a uniform magnetic field a
by holding a magnifying glass 32 from your desk lamp you can focus an image of the lamps bulb on a wall 18 from the
a student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 180 ms the cliff
an explosion of a 100-kg bomb releases only two separate pieces the bomb was initially at rest and a 400-kg piece
a 7 kg penguin is sliding on his belly down a 23 degree icy slope what is the magnitude of the normal force determine
a person travels by car from one city to another with different constant speeds between pairs of cities she drives for
defibrillators are used to revive a person when their heart has stopped beating how do they work what care must the
for tests using a ballistocardiograph a patient lies on a horizontal platform that is supported on jets of air because
a student sitting on a frictionless rotating stool has rotational inertia 095 about a vertical axis through her center
the navy operated a man-rated centrifuge in warminster pa it was used for testing with the astronauts of the mercury
a golf ball strikes a hard smooth floor at an angle of 375 deg and as the drawing shows rebounds at the same angle the
the critical angle for the total internal reflection at the liquid air interface is 425 degrees a if a ray of light
a 600-turn solenoid is 21cm long and 17cm in diameter and carries 67 ma how much magnetic energy does it
a bomb that is initially at rest at the origin explodes and breaks into two pieces of mass m1 1497 kg and m2 2454 kg
a skateboarder m 92 kg takes a running jump onto a friends skateboard that is initially at rest as sketched in the
a beam of light in the air makes an angle of 475 degrees with the surface not the normal of a glass plate having a
the human eye can barely detect a star whose intensity at the earths surface is 16e-11wm2 if the dark adapted eye has a
a typical helium-neon laser found in supermarket checkout scanners emits 633nm--wavelength light in a 11mm diameter
a planet requires 300 earth days to complete its circular orbit around its sun which has a mass of 60 x 1030 kg what
a satellite is in a circular orbit around the earth at an altitude of 360 106 ma find the period of the orbit hint