Suppose you put two protons near each other. Because of the electromagnetic force, the two protons will
A) collide.
B) remain stationary.
C) attract each other.
D) repel each other.
E) join together to form a nucleus.
D
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Spherical Mirrors: A plant that is 4.0 cm tall is placed 15 cm from a concave spherical mirror having a focal length of magnitude 20 cm. Where is the image located?
A. 12 cm behind the mirror B. 12 cm in front of the mirror C. 60 cm behind the mirror D. 60 cm in front of the mirror
The Sun's ________ transports material from the Sun's equator to its poles and back to the equator
Fill in the blank(s) with correct word
A child is standing at the rim of a rotating disk, and throws a rock radially outward at the instant shown. The disk rotates freely without friction. Which of the following statements is correct about the disk-child-rock system as the rock is thrown?
Rank the following kinds of waves according to their frequencies from highest to lowest:
(a) gamma rays (b) microwaves (c) radio waves (d) visible light (e) x-rays
1.c > b > d > e > a 2.b > c > e > b > a 3.a > e > d > b > c 4.e = a = c = d = b