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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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.
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.
The highest energy level in an atom corresponds to n = 1
Indicate whether the statement is true or false