A block on a ramp slides down a 6.28 m long ramp. The ramp has an angle of inclination of 38º. If the block starts from rest and the amount of energy lost due to friction along the ramp is
21.6m J where m is the mass of the block, use energy concepts to determine how fast the block
is going at the bottom of the ramp.

The air that we breath is made mostly of which gaseous molecule

Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.

When using the scientist method, which step comes last?