Molecular motion stops at
A. 0 K
B. 0 C
C. 0 F
D. 32 F
Answer: A. 0 K
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The major division of chemistry that deals with what substances are present and in what quantities is called ______________chemistry
Fill in the blank(s) with correct word
The figure shows the orientation of a flat circular loop consisting of 50 closely wrapped turns each carrying a current I. The magnetic field in the region is directed in the positive z direction and has a magnitude of 50 mT. The loop can turn about the y axis. If ? = 20°, R = 0.50 m, and I = 12 A, what is the magnitude of the torque exerted
on the loop?
?
?
a.
8.1 N ? m
b.
24 N ? m
c.
22 N ? m
d.
13 N ? m
e.
16 N ? m
The diagram below shows the position of a long straight wire perpendicular to the page and a set of directions labeled A through H. When the current in the wire is directed up out of the page, the direction of the magnetic field at point P is
a.
E.
b.
F.
c.
G.
d.
H.
e.
A.
A meterstick moving in a direction parallel to its length appears to be only 60.0 cm long to an observer. What is the meterstick's speed relative to the observer? (c = 3.00 × 10^8 m/s)
a. 1.19 × 10^8 m/s c. 2.93 × 10^8 m/s b. 2.40 × 10^8 m/s d. 2.75 × 10^8 m/s