Which of the following values can you find by calculating the slope of a graph of velocity versus time position . displacement . acceleration . velocity

When many atoms are split in a chain reaction, a large explosion occurs. this is an example of what type of energy conservation

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.

Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)