According to The first law thermodynamics Energy can be created and destroyed, True or False? 

The slope of a velocity time graph over any interval of time gives the during that interval

Which governments provide garbage collection services to homes and businesses

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.