A person standing a certain distance from an airplane with four equally noisy jet engines is experiencing a sound level of 143 dB . Part A What sound level would this person experience if the captain shut down all but one engine? [Hint: Add intensities, not dB's.]

Recessive disorder or disease - how would a child get it?

The consumption of fossil fuels could be

A1,700kg car is being used to give a 1,400kg car a push start by exerting a force of 140n the impulse on the smaller car during the 30.0s of contact is +670kg*m/s. what is the impulse of the smaller car on the larger car? -814 kg*m/s 0kg *m/s -670kg*m/s -550kg*m/s