Recall that the formula for the momentum of your two-cart system is: m_1 * v_1 + m_2 * v_2 Assuming that the uncertainty in mass is negligible, and the uncertainty in velocity is 5 %, what is the uncertainty in the momentum of your two-cart system? Use the following values for your measured masses and velocities: m_1 = m_2 = 0.5 kg v_1 = 3 m/s v_2 = -2 m/s

More solar radiation is absorbed by earth’s surface than by

Two identical stars with mass m orbit around their center of mass. each orbit is circular and has radius r, so that the two stars are always on opposite sides of the circle. (a) find the gravitational force of one star on the other. (b) find the orbital speed of each star and the period of the orbit. (c) how much energy would be required to separate the two stars to infinity?

The ability to make things happen is also called a. heat b. force c. matter d. energy