Which of the following would have the highest power rating? 100 joules of energy used in 0.5 seconds 500 joules of energy used in 0.5 seconds 100 joules of energy used in 0.25 seconds 500 joules of energy used in 0.25 seconds

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.

A17,250 kg rocket is pushed with a thrust of 6,450,284 n. what is the acceleration of the rocket?

Afrequency generator sends a 550 hz sound wave through both water and ice. what is the difference in wavelength between the wave produced in ice and the wave produced in water?