John took 0.75 hours to bicycle to his grandmother's house, a distance of 4 km. What is his velocity? What are you solving for?
What’s the equation?
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Explain why electric current cannot exist if a current doesn't have a voltage source.

Aspecified volume of space contains an electric field for which the magnitude is given by e=e0cos(ωt). suppose that e0 = 20 v/m and ω = 1.0 × 107 s−1. part a what is the maximum displacement current through a 0.80 m2 cross-sectional area of this volume? express your answer with the appropriate units. idisp,max i d i s p , m a x = nothing nothing request answer part b how would this area have to be oriented relative to the electric field to get this maximum displacement current?

Which of the following forces require physical contact? tension air resistance friction magnetic force applied force