What did Isaac Newton believe about the nature of light?
a. That light was a force.
b. That light consisted of waves.
c. That light was a stream of particles.
d. That light was a fluid found in matter.
e. Newton had no theories about light.
c
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A uniform rod (length = 2.4 m) of negligible mass has a 1.0-kg point mass attached to one end and a 2.0-kg point mass attached to the other end. The rod is mounted to rotate freely about a horizontal axis that is perpendicular to the rod and that passes through a point 1.0 m from the 2.0-kg mass. The rod is released from rest when it is horizontal. What is the angular velocity of the rod at the
instant the 2.0-kg mass passes through its low point? a. 1.7 rad/s b. 2.2 rad/s c. 2.0 rad/s d. 1.5 rad/s e. 3.1 rad/s
Which of the following is the direction of an electromagnetic wave having electric and magnetic vectors E and B?
A. E
B. B
C. E·B
D. 
E. 
Boyle's law and Charles' law each respectively assume what is held constant?
A) temperature, volume B) temperature, pressure C) pressure, volume D) volume, pressure E) volume, temperature
The circuit below contains 4 100-W light bulbs. The emf is 110 V. Which light bulb(s) is(are) brightest?
a.
A
b.
B
c.
C
d.
D
e.
C and D