2. What is the total effect of sound produced in an enclosed space called? Acoustics
Overtones
sound quality
Color

What is hidden during a lunar eclipse? isn't the moon hidden?

What should the power status of a circuit be when measuring resistance with an ohmmeter?

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.