The mechanical advantage ( MA ) of a wheel and axle is found by dividing the radius of the wheel by the radius of the axle. Which type of wheel and axle has the greatest mechanical advantage?

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of

What equation is used to calculate the weight of an object on a plant ?

When can a theory be modified if a new type of technology allows for new observations that raise new questions? a-immediately, while the questions about the theory are being asked b-after new hypotheses related to the theory are tested in experiments c-only after the new observations disprove all parts of the theory d-while scientists begin to think about how the theory could improve