In a gas-powered car, a battery

What color of light must blue light mix with to create white light? a. yellow b. white c. blue d. green

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a temperature of 18oc and exits at 6.0 bar. the refrigerant undergoes a throttling process. determine the temperature, in oc, and the quality of the refrigerant at the exit of the expansion valve.