Athin insulating rod is bent into a semicircular arc of radius a, and a total electric charge q is distributed uniformly along the rod. calculate the potential at the center of curvature of the arc if the potential is assumed to be zero at infinity. (use any variable or symbol stated above along with the following as necessary: îµ0.)

Agroup of students were investigating the force of gravity. they began by dropping a foam ball from a height of 3 meters into a bucket of sand. the ball hit the sand in 0.306 seconds. they dropped additional balls of approximately the same diameter, but of different masses. here is the data they collected. based on this experiment and the collected data, what would their conclusion be?

Which levels of government establish and implement educational requirements for minors

Which word expression describes how much to calculate pressure