You were driving your car to utd at a speed of 35 miles per hour. you stopped at the floydcampbell intersection with the signal light showing red (wavelength = 6.45 × 10–5 cm). after 30 sec, the signal becomes green whose frequency is 5.80 × 1014 s –1 . which light has higher energy?

Efficiency is the ratio of to for a system a)power in to power in b)power in to power out c) power out to power out d) power out to power in

Two 2.0-cm-diameter disks face each other, 1.0 mm apart. they are charged to ±10 nc. what is the electric field strength between the disks? a proton is shot from the negative disk toward the positive disk. what launch speed must the proton have to just barely reach the positive disk?

What would people living along the coast in south florida do if there was a hurricane warning? move to locations away from the water flock along coasts to watch the natural phenomenon buy instruments to predict the exact location of the hurricane measure water levels to know the exact time of the hurricane