In an exothermic reaction, energy is the surroundings.

In an endothermic reaction, energy is

the surroundings.

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Convection currents are caused by differences in what two things?

Two charged particles, q1 and q2, are located on the x-axis, with q1 at the origin and q2 initially at x1 = 12.2 mm. in this configuration, q1 exerts a repulsive force of 2.62 µn on q2. particle q2 is then moved to x2 = 18.0 mm. what is the force (magnitude and direction) that q2 exerts on q1 at this new location? (give the magnitude in µn.)