2 cannons fire projectiles upwards with the same velocity. The
cannonball on the left has 4 times the mass of the cannonball on the
right. What can be correctly concluded about their trajectories?

J. j. thomson’s experiment disproved the theory that an atom

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?

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?