Discussion topicselect a musical instrument. research theinstrument and explain how it works in terms ofsound production and resonance. describe how amusician can vary the pitch and loudness of thenotes. explain why different types of musicalinstruments sound different, even though theyplay the same notes.

A30 kg weight lies on top of a massless piston of area a = 0.01 m2 the exterior air is at a (constant) p =1 atm and t = 27 c. the interior gas is 0.4 moles of (ideal) n2 and it has initial temperature 27.00 degrees c. 1. what is the initial pressure in the interior? a. 29.4 kpa b. 130.7 kpa c. 101.3 kpa the next three questions concern what happens when an amount of heat q is slowly added to the interior, raising the piston by 1 mm and raising the interior temperature to 27.40 c

Steam enters an adiabatic diffuser at 150 kpa and 1208c with a velocity of 550 m/s. determine the minimum velocity that the steam can have at the outlet when the outlet pressure is 300 kpa.

While the change in blank will remain the same during a collision, the force needed to bring an object to a stop can be blank if the time if collision is blank