A uniform electric field exists in the region between two oppositely charged plane parallel plates. A proton is released from rest at the surface of the positively charged plate and strikes the surface of the opposite plate, 1.20 cm distant from the first, in a time interval of 3.50×10?6 s . 1. Find the magnitude of the electric field.

2. Find the speed of the proton when it strikes the negatively charged plate

What are two examples of phase changes that skip a phase during transition?

The safe load, l, of a wooden beam of width w, height h, and length l, supported at both ends, varies directly as the product of the width and the square of the height, and inversely as the length. a wooden beam 4 inches wide, 9 inches high, and 240 inches long can hold a load of 6810 pounds. what load would a beam 3 inches wide, 8 inches high, and 144 inches long, of the same material, support? (round off your answer to the nearest integer.)

In the equation for the gravitational force between two objects, which quantity must be squared? m1 m2 g d