A rock is thrown with a force of 500 N and an acceleration is 75 m/s^2. What is its mass? A. 575 kg
B. 3.8 x 104 kg
C. 0.15 kg
D. 6.7 kg

The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5. what is the specific heat ratio? show the math steps .

Which statement is true? a) the work done to lift an object 6 meters is greater than the gravitational potential energy it gains. b) the work required to push an object is less than the work required to pull an object the same distance. c) the work required to raise an object to a height is equal to the gravitational potential energy the object gains. d) the work done against gravity to lift an object straight up is greater than the work required to roll it up a ramp.

Which of hubble’s discovery support the big bang theory