When a negatively charged cloud passes overhead, the ground below becomes positively charged, this occurs because of electrification.

induction.

deduction.

polarization.

What is the length x of the side of the triangle below? (hint: use the cosine function)

Aplane flying horizontally at an altitude of 1 mile and a speed of of 500mih passes directly over a radar station. find the rate at which the distance from the plane to the station is increasing when it is 2mi away from the station.

What happens to an isotope during radioactive decay?