A cross-section of two infinite lines of charge extends out of the page. The linear charge densities are ±λ.
Find an expression for the electric field strength E at height y above the midpoint between the lines. Express your answer in terms of the variables λ, y, d and appropriate constants.

What type of nuclear decay causes the atomic number of an element to increase by 1?

Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?

At an oceanside nuclear power plant, seawater is used as part of the cooling system. this raises the temperature of the water that is discharged back into the ocean. the amount that the water temperature is raised has a uniform distribution over the interval from 10° to 25° c. what is the standard deviation of the temperature increase?