Find the heat required to heat 5-kg water from 20 °C to 80 °C. Express the
temperature of 80 °C in both Fahrenheit degree and Kelvin

Your town is considering building a biodiesel power plant describe at least two advantages and two disadvantages

If you wanted to move an electron from the positive to the negative terminal of the battery, how much work w would you need to do on the electron? enter your answer numerically in joules.

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?