My teacher made an Atwood machine lab and I have no clue how he got 0.202 N for the force. The other values are: mass 1: 120g mass 2: 100g acceleration: 0.92 m/s^2 PLEASE HELP!

For a particular reaction, ? h = -144.6 kj and ? s = -301.2 j/k. calculate ? g for this reaction at 298 k.

How is the gravitational force related to the distance between two objects?

How does the kinetic energy of a charge change as the charge moves under the effect of an electric field from higher potential to lower potential? a.the kinetic energy increases.b.the kinetic energy decreases.c.the kinetic energy remains the same.d.the kinetic energy is always zero.