In the NASCAR video you learned that race teams try to reduce drag by adding removing all objects that allow air to flow over the car instead of
going through the car. The negative trade off of forcing the air over the car
is that it creates more
to build up in the engine.

What do elements in a family tend to share. a.) similar periods b.) similar groups c.) similar atomic symbols d.) similar chemical properties and characteristics

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.

Most of the volume of an atom is occupied by the