As a plane pilot is flying through air that has a temperature of 15C the pilot accelerates what speed should be expect the sonic boom to oceans

Matt is driving down 7th street. he drives 150 meters in 18 seconds. assuming he does not speed up or slow down, what is his speed?

The consumption of fossil fuels could be

How to tell if two objects are in thermal equilibrium 1.the objects have the same temperature 2.the objects are the same size 3.the objects are touching each other 4.the objects temperatures are changing