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velocity and acceleration consider a velocity vector given in standard unit vector form in rectangular cartesian
two parts of a closed container are separated by a membrane which only allows the passage of water initially each
you live in the ground floor of a high rise apartment block the over head water tanks which supply water to all the
the human visual resolution is 1 minute of arc assuming that you are looking down an isolated road at nighta at what
a 200 kg floodlight in a park is supported at the end of a horizontal beam of mass 200 kg and length l that is hinged
at an open-air concert a person sits at a location that is 7m and 910m respectively from speakers at each side of the
a hiker determines the length of a lake by listening for the echo of her shout reflected by a cliff at the far end of
a rope of mass 065 kg is stretched between two supports that are 30 m apart if the tension in the rope is 120 n how
a calculate the wavelengths in air at 20degc for sounds in the maximum range of human hearing 20 hz to 20000 hzb what
a loudspeaker is placed between two observers who are 120m apart along the line connecting them if one observer records
a cord is 20cm long four complete waves fit along its length when vibrated 30 times per second for the waves on the
a steel guitar string has a length of 74 cm and thickness of 037 mm it is under 35n tension calculate the wave speed in
a hollow log open at one end is struck with a stout stick the hollow cavity of the log is 6 meters long and the
a sailor strikes the side of his ship just below the surface of the sea he hears the echo of the wave reflected from
a fishing boat is drifting just above a school of tuna on a foggy day without warning an engine backfire occurs on
taking right to be positive if a speaker is moving at a velocity of -22 ms while emitting a sound of frequency 1385 hz
two speakers are driven by the same oscillator whose frequency is f they are located a distance d from each other on a
a 4400 hz tuning fork is sounded together with an out-of-tune guitar string and a beat frequency of 3 hz is heard when
the speed of sound in air is about 660mileshour a passenger train approaches an unguarded railroad crossing at a
ultrasound is the name given to frequencies above the human range of hearing which is about 20000 rm hz waves above
the fundamental frequency of an open-open tube is 1500 hz when the tube is filled with 0 degree celsius helium what is
two guitarists attempt to play the same note of wavelength 649 cm at the same time but one of the instruments is