The maximum energy a bone can absorb without breaking is surprisingly small. For a healthy human of mass 50 kg , experimental data show that the leg bones can absorb about 200 J. From what maximum height could a person jump and land rigidly upright on both feet without breaking his legs?

Unpolarized light of intensity i_0=750w/m^2 is incident upon two polarizers. after passing through both polarizers the intensity is i_2=280w/m^2. (a) what is the intensity of the light after it passes through the first polarizer in w/m^2? (b) write an equation for the angle between the polarizers in terms of the initial (i_0) and final (i_2) intensities. (c) find the angle between the polarizers in degrees.

Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?

If the new moon happens on january 15th, what shape will it be on february 6th?