10. If a diffraction grating produces a first-order maximum for the shortest wavelength of visible light at 30.0∘30.0∘, at what angle will the first-order maximum be for the longest wavelength of visible light?

answer: point c: b. 1/2 potential, 1/2 kinetic, point a: 3/4 of its potential energy, point d or b: 3/4 potential, 1/4 kinetic

explanation: i cant explain. it's difficult to explain.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2