A noisy machine in a factory produces sound by a level of
A noisy machine in a factory produces sound by a level of 80 dB. How many identical machines could you add to the factory without exceeding the 90 dB limit?
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white light strikes a diffraction grating 890 linesmm at normal incidencenbsp what is the highest order visible
two masses are on a frictionless horizontal surface moving with two perpendicular directions m1m and m23m after the
the coefficient of static friction among the floor of a truck and a box resting on it is 026 the truck is traveling at
at rest a cars horn sounds the note a 440 hz the horn is sounded while the car is moving down the street a bicyclist
a noisy machine in a factory produces sound by a level of 80 dbnbsp how many identical machines could you add to the
a certain freely falling object needs 175 s to trava certain freely falling object needs 175 s to travel the last 400 m
two astronauts one of mass 60 kg and the other 82 kg are initially at rest in outer space they then push each other
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a ball is thrown vertically upward with a speed of 100 msa how high does it riseb how long does it take to reach its
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