Along solenoid with radius b and n turns per unit length has a time-dependent current i(t) in the φ direction. find the electric field at a distance r from the axis, both inside and outside the solenoid. you may assume the quasistatic approximate is valid.

Spend time observing or thinking about events that involve matter and energy. which events can you explain? which events can’t you explain?

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?

How to tell if two objects are in thermal equilibrium 1.the objects have the same temperature 2.the objects are the same size 3.the objects are touching each other 4.the objects temperatures are changing