imagine a demo car of total mass 51.0 kg includes nitro boost fuel of 1.0kg. The car is initially accelerating at the rate of 2.0 m/s^2. When the nitro boost is powered on, the new acceleration is 4.0 m/s^2. find out the change in force just prior to firing the nitro and just after the fuel is exhausted​

Phase changes are chemical changes. true or false

Steam enters an adiabatic diffuser at 150 kpa and 1208c with a velocity of 550 m/s. determine the minimum velocity that the steam can have at the outlet when the outlet pressure is 300 kpa.

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?