A 50 kg skater pushes off from a wall with a force of 200 N. What is the skater's acceleration?

The sun generates both mechanical and electromagnetic waves. which statement about those wave is true?

Which units can be used to measure length or distance? check all that apply. gram meter kilometer liter inch

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.