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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a worker uses a pulley system to raise a 240kg carton 165 m a force of 129 n is exerted and the rope is pulled 330m1
two masses are on a frictionless horizontal surface moving by 2 perpendicular directions m1m amp m23m after the
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
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the density of matter in interstellar space is approx one electron and one proton per cubic centimetrenbsp what is the
the coefficient of static friction among the floor of a truck and a box resting on it is 026 the truck is travelling at
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