This question has two parts. A. A small, closed chamber of gas is heated. When the gas in the
chamber expands, it does 5 J of work on a piston. The gas has
an initial energy of 8 Jand a final energy of 30 J. Considering
the equation for the first law of thermodynamics (AU = Q + W).
does the work done in this scenario have a positive or negative
value? Explain

B. How much heat is added to the gas in the chamber?

Just do the numerical by yourself

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.

distance = 150m

displ = root (50 ^2 + 100^2)

root(2500+10000)

root 125000