Amass-spring system can oscillate with simple harmonic motion because a compressed or stretched spring has which kind of energy?
a. kinetic
c. gravitational potential
b. mechanical
d. elastic potential

Which is the best for showing percentages of different types of cars sold(gas hybrid , electric , other ) in the united states ?

Avehicle has an oil leak that is causing the entire oil pan to be wet, but inspection reveals no exact source after cleaning off the oil residue. technician a says to install a fluorescent dye in the crankcase and operate the engine, then re-inspect for leaks with a special light (black light). technician b says the oil leak may be coming from a source at the top of the engine, such as a valve cover gasket. who is correct?

What occurs during a combustion reaction