All atoms of the same element have the same number of
a. electrons b. protons
c. neutrons
d. isotopes

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

In what direction does an applied force move an object

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.