Answer:
a
The expression for wave number is
The expression for the wave number is
Explanation:
The explanation is shown on the first uploaded image
Answer: B
Explanation: A sphere is a perfectly round geometrical object in three-dimensional space that is the surface of a completely round ball (viz., analogous to the circular objects in two dimensions, where a "circle" circumscribes its "disk"). Like a circle in a two-dimensional space, a sphere is defined mathematically ... This distance r is the radius of the ball, which is made up from all points.
Lil tiny babies with red hair
Answer: We wouldn't have light, water, wifi (THE HORROR!!!!!!) no blowdryer, etc.