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a ladder 49 m long leans against a wall inside a spaceship from the point of view of a person on the ship the base of
a flint glass plate n 166 rests on the bottom of an aquarium tank the plate is 650 cm thick vertical dimension and
two converging lenses having focal lengths of 100 cm and 200 cm are placed 50 cm apart as shown in the figure below the
a mild structural steel beam has a solid square cross section of 100mm and is simply supported by two supports 3m apart
a short mild steel column with fixed ends has a cross section of 100mm by 50mm assuming a safety factor of 6 calculate
a cannon ball is fired from the top of a cliff that is 125 m above the ground the cannon ball is launched with a
objects of equal mass are oscillating up and down in simple harmonic motion on two different vertical springs the
a 120-kg block rests on a horizontal table and is attached to one end of a massless horizontal spring by pulling
an infinitely long cylinder has a circular cross section of radius a and its axis along the z axis a steady current i
a wood- sphere of radius 10 cm has a core of lead also in the shape of a sphere the wood sphere when placed in water
as you stand by a railroad track a train passes with its whistle blowing as it passes you hear a frequency shift
a transverse harmonic wave travels on a rope according to the following expression yxt 013sin26x 174t the mass
a ywheel in the form of a heavy circular disk of diame- ter 0600 m and mass 200 kg is mounted on a friction-less
an airplane undergoes the following displacements first it flies 71 km in a direction 30deg east of north next it flies
1 a piece of charcoal used for cooking is found at the remains of an ancient campsite a 073 kg sample of carbon from
a disk of radius 02m and moment of inertia 15 kgm2 is mounted on a nearly frictionless axle a string is wrapped
a wave pulse travels down a slinky the mass of the slinky is m 088 kg and is initially stretched to a length l 73 m
1 how much more light does one collect with a 4-meter diameter telescope in 05 minutes than with a 05-meter diameter
a bullet is moving at a speed of 410 ms when it embeds into a lump of moist clay the bullet penetrates for a distance
a spaceship is emitting 500-nm light and traveling toward us at 10 the speed of light we detect a radio waves b 450-nm
an asteroid passes earth over its equator pictures are taken of it from earths north and south poles simultaneously
radioactive isotopes often occur together in mixtures suppose a 290g sample contains 131ba with a half-life of 12
a box of wood has a vertical projection of 6 inches when placed in water and 4 inches when placed in alcohol if the
consider the situation where you moved the magnet back and forth in the coil in periodic fashion thus inducing a
a test charge is placed at a distance of 25 times 10-2 meters from a charge of 64 times 10-5 coulombs what is the