Two loudspeakers are 1.00m apart. a person stands 4.00m from one speaker. how far must this person be from the second speaker to detect destructive interference when the speakers emit an 115Hz sound? assume the temperature is 20°C.​

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.

The chart shows daniela’s run through her race. what is her velocity? 1.5 m/s 2 m/s 2.5 m/s 5 m/s