Um barco de pesca utiliza um sonar para determinar a localização dos cardumes. O sonar emite ondas sonoras e regista o eco 1,4s depois. Determina a profundidade a que se encontram os cardumes detetados.

Consideravsom na água do mar= 1520 m/s.

Use the data provided to calculate the gravitational potential energy of each cylinder mass. round your answers to the nearest tenth. 3 kg: kj 6 kg: kj 9 kg: kj

Which is not a source of noise pollution? a)airplanes b)acid rain c)machines d)cars

The pressure, volume, and temperature of a mole of an ideal gas are related by the equation pv = 8.31t, where p is measured in kilopascals, v in liters, and t in kelvins. use differentials to find the approximate change in the pressure if the volume increases from 14 l to 14.6 l and the temperature decreases from 375 k to 370 k. (round the answer to two decimal places.)