15. For waves moving at a constant speed, if the wavelength is doubled, the frequency is
doubled
halved
unchanged
quadrupled

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =

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.

What causes the development of most clouds and precipitation in the atmosphere?