.a diffraction grating has exactly 5000 lines per centimeter .helium laser of wavelength 633nm is incident on the grating. a) if the diffraction grating is cut into two similar lengths ,find the angle of the first maxima in this case .​

The system is released from rest with the cable taut, and the homogeneous cylinder does not slip on the rough incline. determine the angular acceleration of the cylinder and the minimum coeffi cient s of friction for which the cylinder will not slip.

Which type of basaltic lava flow has a fairly smooth

The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?