A 3,000kg roller coaster is going upside down at the top of a loop. The coaster is traveling at 24m/s around the loop with a radius of 15m. a) What is the force of the tracks on the roller coaster at the top of the loop?

b) What is the force of the tracks on the roller coaster at the bottom of the loop?

Examine the nuclear reacti why is this classified as a nuclear reaction rather than a chemical reaction? it is not balanced. a new compound is formed. a change has occurred in a nucleus. a new element has been formed.

Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.