In Hans Oersted’s experiment, why did a compass needle move when an electric current flowed through a nearby wire? A. The compass conducted electricity.
B. The current created a magnetic field around the wire.
C. The compass was broken.
D. The current changed Earth’s magnetic field.

Asubmarine has a "crush depth" (that is, the depth at which water pressure will crush the submarine) of 250 m. what is the approximate pressure (water plus atmospheric) at this depth? (recall that the density of seawater is 1025 kg/m3, g = 9.81 m/s2, and 1 kg/(ms2) = 1 pa = 9.8692 10-6 atm.) a. 34.8 atm b. 24.8 atm c. 25.8 atm d. 7.8 atm

What is required for an electric charge to flow through a wire? zero resistance in the wire a balance of electric potential high resistance in the wire a difference in electric potential

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?