Answer:
Explanation:
a ) Distance of screen (D) = 50 X 10⁻²
Wavelength of light λ = 690 x 10⁻⁹
d = width of slit
Distance between first and third dark fringe = 2 x fringe width
= 2 x λD/d = 3 x 10⁻³
d = 2 x 690 x 10⁻⁹ x 50 x 10⁻² /3 x 10⁻³ = 0.23 mm
b ) Width of central bright fringe = 2 λD/d
2 x 690 x 10⁻⁹ x 50 x 10⁻² /23 x 10⁻⁵ m
= 3 mm.
Dr.phil can help you with that answer also the answer is 21.3
I think the force of spinning it can only hold for so long and because of gravitys pressure.(i hope i helped) :)
bonsoir, je peux vous aider avec les maths laissez-moi comprendre merci
Simple.
1 mile = 1.6 km
So simply, 20,000 miles = 20,000 × 1.6
which is equal to 32,000km
Hope it helps dear friend ☺️