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a tuning fork vibrates at a frequency of 520 hz an out-of-tune piano string vibrates at528 hz how much time separates
a 2400-kg satellite is in a circular orbitaround a planet the satellite travels with a constant speedof 667x10 3 ms
when water is boiled under a pressure of 200 atm the heat ofvaporization is 220 x 106 jkg and the boling point is
a cylindercontains a mixture of helium and argon gas in equilibrium at atemperature of 149degca what is the average
a certain string just breaks when it is under400n of tension a boy uses this string to whirl a 10-kgstone in a
an unknown tuning fork is sounded along w a tuning fork whosefrequency is 256hz and a beat frequency of 3 hz is heard
suppose you have two ice cube traysone is filled with hot water and the other with cold water which tray will produce
a simple pendulum is 400 m longa what is the period of simple harmonicmotion for this pendulum if it is hanging in an
a ball with a mass of 25 grams is dropped from aledge 908 meters above the ground what is its kinetic energy theinstant
a worker pushed a 27kg block 92 m along a level floor atconstant speed with a force directed 32o below thehorizontal if
a cue ball mass0165 kg is at rest on africtionless pool table the ball is hit dead center by a poolstick which applies
a student m63 kg falls freely from restand strikes the ground during the collision with the ground hecomes to rest in a
during a solar eclipse the moon earth and sun all lie on thesame line with the moon between earth and the suna what
at 20 c a steel rod of length 40000 cm and a brass rod oflength 30000 cm both of the same diameter are placed end to
suppose the minimum uncertainty in the position of a particleis equal to its de broglie wavelength if the particle has
a rocket is accelerated to speed 45300 ms near earthssurface where earths radius is re 6370 km and it then coasts
notes produced by a violin range in frequency fromapproximately 196hz to 2637hz1 find the maximum wavelength inair
a 229n force is applied to the plunger of a hypodermicneedle if the diameter of the plunger is 127 cm and that ofthe
a 14cm tall object is 40cm from a concave mirror ifthe image is 40cm tall how far is it from the
an archer pulls herbowstring back 0300 m by exerting aforce that increases uniformly from zero to 280 na what is the
light of a wavelength 610nm is incident on a slit of 020mmwide and the diffraction pattern is produced on a screen that
a spring in a toy gun has a spring constant of 915 nm and can be compressed 180 cm beyond the equilibrium position a
if you were to walk briefly in space without aspacesuit while far from the sun as an astronaut does in the movie2001
a spring has a spring constant of 578 nm when used tosuspend an object in air the spring stretches by 00640 m when used
a solid sphere has a temperature of 768 k the sphere is melteddown and recast into a cube that has the same emissivity