In 1994, the performer rod stewart drew over 3.0 million people to a concert in rio de janeiro, brazil. the people in the group had an average mass of 80 kg. 1. what collective gravitational force would the group have on a 5.5-kg eagle soaring 270 m above the throng? if you treat the group as a point object, you will get an upper limit for the gravitational force. (express your answer to two significant figures.)
2. what is the ratio of that force of attraction to the force between earth and the eagle? (express your answer to two significant figures.)

Acylinder with a movable piston contains 11.7 moles of a monatomic ideal gas at a pressure of 1.32×10^5 pa. the gas is initially at a temperature of 300 k. an electric heater adds 43200 j of energy into the gas while the piston moves in such a way that the pressure remains constant. cp=20.79 j k^−1 mol^−1 for a monatomic ideal gas, and that the number of gas molecules is equal to avogadro's number (6.022×10^23) times the number of moles of the gas. (a) what is the temperature of the gas after the energy is added? (b) what is the change in volume of the gas? (c) how much work is done by the gas during this process?

Which graph represents motion with an object with positive velocity that is located at a position of 3 meters at a time of 0 seconds? a) a b) bb eliminate c) c d) d

The energy released by a nuclear fusion reaction is produced when