At what rate would the current in a 100-mH inductor have to change to induce an emf of 1000 V in the inductor

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

Aspectroscope breaks light up into its colors, allowing scientists to analyze light from the solar system and universe. by studying the spectral line patterns, widths, strengths and positions, scientists can determine the speed, position, and of celestial bodies. a) age b) origin c) rotation d) temperature

Does current flow through or across a resistor?