What is the total number of individual atoms in a water molecule?
A) one
B) two
C) three
D) four
E) none
Answer: C
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The field just outside the surface of a long conducting cylinder which has a 2.0-cm radius points radially outward and has a magnitude of 200 N/C. What is the charge density on the surface of the cylinder?
A. 2.7 nC/m2 B. 1.8 nC/m2 C. 3.5 nC/m2 D. 4.4 nC/m2 E. 0.90 nC/m2
A bar magnet is dropped from above and falls through the loop of wire shown below. The north pole of the bar magnet points downward towards the page as it falls. Which statement is correct?
a.
The current in the loop always flows in a clockwise direction.
b.
The current in the loop always flows in a counterclockwise direction.
c.
The current in the loop flows first in a clockwise, then in a counterclockwise direction.
d.
The current in the loop flows first in a counterclockwise, then in a clockwise direction.
e.
No current flows in the loop because both ends of the magnet move through the loop.
What is the magnification of a telescope and eyepiece if the telescope objective has a focal length of 200 cm and the eyepiece has a focal length of 2.0 cm?
a. 400 times b. 4000 times c. 100 times d. 1000 times e. 40 times
The allowed shapes for orbits under the force of gravity are ___________________________.
What will be an ideal response?