A boy throws a steel ball straight up. Disregarding any effects of air resistance, the force(s) acting on the ball until it returns to the ground is(are):

In the first law of thermodynamics, triangle e=q-w, what does q stand for

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?

The largest observatory complex in the world is on mauna kea, the tallest mountain on earth. what are some factors astronomers consider when selecting an observatory site? don’t forget practical ones. should astronomers, for example, consider building an observatory on denali (mount mckinley) or mount everest?