A physical therapy exercise has a person shaking a 5.00 kg weight up and down rapidly. If the barbell is moving at 4.50 m/s, what is the magnitude of the force required to stop it in 0.333 seconds?

It is may 5 and you are somewhere in the northern hemisphere. if you determine that the noon sun is 51 degrees above your southern horizon, what is the latitude of your location

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.

Why do metals "give up" their valence electrons?