If a solid conducting cylinder was quickly inserted in a hole of the current-carrying pipe, it will not produce eddy currents correct? explain with details, and diagrams.

2) also, if we assume the magnetic field is zero(inside the pipe), then in the entry/exist of the conducting cylinder is there eddy currents?

A10-kg piece of aluminum sits at the bottom of a lake, right next to a 10-kg piece of lead, which is much denser than aluminum. which one has the greater buoyant force on it? explain. b - the aluminum a) both have the same buoyant force. b) the aluminum c) the lead d) it cannot be determined without knowing their volumes.