two point charges of 3.4 μc and 6.6 μc are 0.20 m apart. what is the electrical potential energy of the system?

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87

If there's a small amount of friction between two surfaces, the result could be select all that applya. no movement b. heatc. a little bit of movementd. sliding around

The record distance in the sport of throwing cowpats is 81.1 m. this record toss was set by steve urner of the united states in 1981. assuming the initial launch angle was 45° and neglecting air resistance, answer the following. (a) determine the initial speed of the projectile. m/s