What happens when a blaring siren moves away from you?
a) the speed of sound decreases.

b) the speed of sound increases.

c) the wavelength of sound increases.

d) the wavelength of sound decreases.

Which of the the following are examples of projectile motion of both projectile motion and two dimensional motion

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge

An air standard cycle with variable specific heats is executed in a closed system and is composed of the following four processes. 1-2 isentropic compression 100 kpa and 22°c to 600 kpa 2-3 v=constant heat addition to 1500 k 3-4 isentropic expansion to 100 kpa 4-1 p=constant heat rejection to initial state (a) show the cycle on p-v and t-s s (b) calculate the net work output per unit mass (409 kj/kg) (c) determine the thermal efficiency (47.9%)