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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
the fundamental frequency of a pipe that is open at both ends is 592 hza how long is this pipeb if one end is now
a rescue plane flies horizontally at a constant speed searching for a disabled boat when the plane is directly above