The swim bladder of a fish keep the fish from sinking

a) increasing its weight
b) decreasing its weight
c) increasing its buoyancy
d) decreasing its buoyancy

The graph below represents the work done by a student while running up flights of stairs. determine the student's power output after 10 seconds: 1600 j/s 8000 j/s 160 j/s 800 j/s

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.

If the textbook weighs 19.6 newtons on venus,what is the strength of gravity on venus?