Two particles, one with charge -4.61 × 10-6 c and one with charge 3.55 × 10-6 c, are 0.0809 meters apart. what is the magnitude of the force that one particle exerts on the other?

For general projectile motion, when the projectile is at the highest point of its trajectory, its acceleration is zero? a)the horizontal and vertical components of its velocity are zero. b) its velocity is perpendicular to the acceleration. c)the horizontal component of its velocity is zero. d)its velocity and acceleration are both zero.

Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?

First answer marked as brainiest which is the correct equation describing the first law of thermodynamics? a) when the internal energy of a system changes, it equals the amount of heat added plus the work done. b) when work is done by the piston, it is equal to the heat added plus the change in internal energy of the system. c) when heat is added to the system, it is equal to the amount of work done by the piston plus the change in internal energy of the system.