Three carts of masses m1 = 4.00 kg, m2 = 10.0 kg, and m3 = 3.00 kg move on a frictionless, horizontal track with speeds of v1 = 5.00 m/s to the right, v2 = 3.00 m/s to the right, and v3 = 4.00 m/s to the left as shown. velcro couplers make the carts stick together after colliding. find the final velocity of the train of three carts

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic

The air that we breath is made mostly of which gaseous molecule

Amichelson interferometer operating at a 600 nm wavelength has a 3.02-cm-long glass cell in one arm. to begin, the air is pumped out of the cell and mirror m2 is adjusted to produce a bright spot at the center of the interference pattern. then a valve is opened and air is slowly admitted into the cell. the index of refraction of air at 1.00 atm pressure is 1.00028.how many bright-dark-bright fringe shifts are observed as the cell fills with air?