Calculate the wavelength of light that has its third minimum at an angle of 30.0º when falling on double slits separated by 3.00~\mu\text{m}3.00 μm.

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?

The material that keeps its new shape after it is stretched is called?

Two cannon balls weighing 18 kg and 24 kg are chained together and fired horizontally with a velocity of 165 m/s from the top of a 21-m wall. the chain breaks during the flight of the cannonballs and the 18-kg cannonball strikes the ground at t = 1.5 s, at a distance of 240 m from the foot of the wall, and 7 m to the right of the line of fire. determine the position of the other cannonball at that instant. neglect the resistance of the air.