What is the minimum thickness of a coating of magnesium fluoride (n = 1.38) applied to glass (n = 1.50) that gives a minimum reflection for 600 nm light?
A. 600 nm
B. 300 nm
C. 435 nm
D. 109 nm
E. 100 nm
D. 109 nm
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The highest energy level in an atom corresponds to n = 1
Indicate whether the statement is true or false
A positive charge and a negative charge held near each other are released. As they move, the force on each particle
a. increases. b. Stays the same. c. decreases.
The point P lies along the perpendicular bisector of the line connecting two long straight wires S and T perpendicular to the page. A set of directions A through H is shown next to the diagram. When the two equal currents in the wires are directed up out of the page, the direction of the magnetic field at P is closest to the direction of
A. E. B. F. C. G. D. H. E. A.
Which of the following best describes differentiation in planetary geology?
A) Gravity separates molten materials according to density. B) Different types of minerals form a conglomerate rock. C) One planet's surface evolves differently from another planet's surface. D) One part of a planet's surface evolves differently from another part of the same planet's surface. E) Dense materials condense at higher temperatures than less dense materials.