- Earth's moon orbits Earth at a mean distance of 3.84 x 108 m and has an orbital period of 27.4 days. Use this data to calculate Earth's mass.

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

Nitrogen (n2) undergoes an internally reversible process from 6 bar, 247°c during which pν1.2 = constant. the initial volume is 0.1 m3 and the work for the process is 121.14 kj. assuming ideal gas behavior, and neglecting kinetic and potential energy effects, determine heat transfer, in kj, and the entropy change, in kj/s. show the process on a t-s diagram.

What happens when a rubber rod is rubbed with a piece of fur?