Help me please *50 point* Please help plsss
What is the mass of the above object in space?
What is the weight of the above object in space?
What is the mass of the above object on Earth?
What is the weight of the above object on Earth?

Which describe reflection? check all that apply. light bounces off a boundary.

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.

You add 800 ml of water at 20c to 800 ml of water at 80c what is the most likely final temperature of the mixture ? a. 100c b. 60c c. 25 c d.50c