When living things use chemical reactions to break down food, some of the energy is transformed into OA. sound.
OB. heat.
OC. light
OD. waste
waste.

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.

Work = force × a. work b. energy c. distance d. momentum