Light is shone on a diffraction grating with d= 1.00*10^-6 m. The second-order (m=2) maximum occurs at an angle of 74.6 degrees. What is the wavelength of the light IN NANOMETERS? nm

In the sport of parasailing, a person is attached to a rope being pulled by a boat while hanging from a parachute-like sail. a rider is towed at a constant speed by a rope that is at an angle of 15 ∘ from horizontal. the tension in the rope is 1900 n. the force of the sail on the rider is 30∘ from horizontal. what is the weight of the rider? express your answer with the appropriate units.

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

Idon’t quite understand this problem