PLZZZ suppose you increase the voltage in the coils of the solenoid of an electromagnet. what happens the the electromagnet?

A. its strength becomes less

B. its strength decreases then increases

C. its strength becomes greater

D. its strength remains the same

Identify some abiotic characteristics of the tundra biome.

Imagine that the rightward current flows in the rod for a short time. as a result, what will the net charge on the right and left ends of the rod become? left end negative and right end positive left end negative and right end negative left end negative and right end nearly neutral left end nearly neutral and right end positive both ends nearly neutral

Arock,thrown straight up, takes 4.2 seconds to reach its max height (g=9.8m/s) what was the initial velocity? what was its maximum height?