A strongman in a competition must throw a heavy cement sphere as far as he can up into the air. How high must he throw a 65.0kg sphere to give it 2,000J of potential energy?

Unpolarized light whose intensity is 1.19 w/ is incident on a polarizer. (a) what is the intensity of the light leaving the polarizer? (b) if the analyzer is set at an angle of = 41.0∘ with respect to the polarizer, what is the intensity of the light that reaches the photocell?

Which best describes how fluids change as they travel through different portions of the convection currents? they change to solids at the outer portion of the convection currents. they change to solids at the inner portion of the convection currents. they become more dense at the outer portion of the convection currents. they become more dense at the inner portion of the convection currents

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