Diffraction grating has 5150 lines per centimeter ruled on it. What is the angular separation between the first- and the third-order bright spots on the same side of the central maximum when the grating is illuminated by a beam of light with wavelength 633 nm

Explanation:

width of slits a = 1 x 10⁻² / 5150

= 1.941 x 10⁻⁶ m

angular position of first bright fringe = λ / a ,   λ is wavelength of light

= 633 x 10⁻⁹ / 1.941 x 10⁻⁶

= 326.12 x 10⁻³ radian

angular position of third bright fringe = 3 λ / a ,   λ is wavelength of light

= (3 x 633 x 10⁻⁹)  / 1.941 x 10⁻⁶

= 978.36  x 10⁻³ radian

angular separation between the two

= 978.36  x 10⁻³  -  326.12 x 10⁻³

= 652.24 x 10⁻³ radian .

they are non-matter

explanation:

they are non-matter. basically, any type of energy or any abstract concept is an example of something that does not matter. other examples include dreams, magnetism, radio, and hate

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .