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a wave on a string is described by yx t 170 sinx8 - 8t where x and y are in centimeters and t is in seconds a what is
estimate the pressure exerted on a floor by a one pointed chair leg 60 kg on all four legs of area0020 cm2 and b a
starting with the ampere law what assumption leads to the modification of ampere law start from the assumption and
a vertical force f is applied to a block of mass m that lies on a floor what happens to the magnitude of normal force
when an electron moving through air has 5 mev of energy what is the ratio of the rates of energy loss by bremsstrahlung
the slope of a line connecting two points on a velocity versus time graph gives a instantaneous velocity b average
a120-m-long wire has a resistance equal to0320 a second wire made of identical material has a length of190m and a mass
a proton mass 167 10 is moving at 165 10 directly toward a stationary helium nucleus mass 664 10 after a head-on
the steel e string of a violin is under a tension of 460 n the diameter of the string is 0170 mm and the length under
piano tuners tune pianos by listening to the beats between the harmonics of two different strings when properly tuned
a 44-g ball consists of a plastic spherical shell and a water-filled core the shell has an outside diameter equal to
the springs of a 1200 kg car compress 65 mm when its 68 kg driver gets into the drivers seat if the car goes over a
occasionally huge icebergs are found floating on the oceans currents suppose one such iceberg is 125 km long 326 km
a cubical piece of heat-shield-tile from the space shuttle measures 012 m on a side and has a thermal conductivity of
as the captain of the scientific team sent to planet physics one of your tasks is to measure g you have a long thin
a particularly beautiful note reaching your ear from a rare stradivarius violin has a wavelength of 391 cm the room is
two loudspeakers emit sound waves along the x-axis the sound has maximum intensity when the speakers are 17apart the
the lowest note on a grand piano has a frequency of 275 the entire string is 200 long and has a mass of 430 the
a sinusoidal wave travels along a stretched string a particle on the string has a maximum velocity of 140 and a maximum
a pair of in-phase stereo speakers is placed side by side 061 m apart you stand directly in front of one of the
a train on one track moves in the same direction as a second train on the adjacent track the first train which is ahead
a motorcycle and a police car are moving toward one another the police car emits sound with a frequency of 514 hz and
32 violins playing simultaneously with the same intensity combine to give an intensity level of 82 db a what is the
a racecar with a speed of 60 ms is taking a curve with a radius of 10 m what is the acceleration of the racecar what is
a cork on the surface of a pond bobs up and down two times per second on ripples having a wavelength of 770 cm if the