Information-carrying nerves are connected to the retina at the

A) fovea.
B) blind spot.
C) cornea.
D) iris.
E) periphery.


Answer: B

Physics & Space Science

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Kepler's third law of planetary motion states, "A planet's _____ squared is proportional to its average distance from the Sun cubed."

a. radius b. diameter c. rotational speed d. orbital period e. rotational period

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Inductive reactance XL is given by

A.

L?.

B.
L/?.

C.
.

D.
?/L.

E.
?2L.

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Two large parallel metal plates are uniformly and oppositely charged and the electric field between them is 7.6 × 106 N/C

(a) What is the charge density on each plate? (b) If the very large charged plates are moved 2 times farther apart, what is the electric field between the plates now?

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The Earth remains in orbit about the Sun, rather than falling in to the Sun, because

1.it is outside of the gravitational influence of the Sun. 2.the net force on the Earth is zero. 3.although the Earth is constantly being pulled toward the Sun, it is always moving with a velocity component perpendicular to the direction that it is being pulled. 4.none of these apply.

Physics & Space Science