Which of the following is the correct electron dot structure for carbon (atomic no. = 6)?
A) a
B) b
C) c
D) d
E) e
Answer: E
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The temperature at which a liquid freezes is
A) affected by foreign ions. B) the same temperature at which its solid form melts. C) both of these D) neither of these
The magnetic dipole moment of an electron (charge = ?e; mass = me) moving in a circular orbit of radius r with speed v about a nucleus of mass mN is proportional to
a. r. b. v. c. vr. d. evr. e. mNvr.
Two blocks in contact with each other are pushed to the right across a rough horizontal surface by the two forces shown. If the coefficient of kinetic friction between each of the blocks and the surface is 0.30, determine the magnitude of the force exerted on the 2.0-kg block by the 3.0-kg block
a.
15 N
b.
25 N
c.
11 N
d.
22 N
e.
33 N
An object placed at a distance farther from a converging lens than the focal point always produces an image that is
A. The same size as the object B. Inverted C. Virtual D. Smaller than the object