Light is totally absorbed when sent through two polaroid filters if their transmission axes are __________
Fill in the blank(s) with correct word
perpendicular
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Nuclear Reactions: In the fission reaction 235U + 1n ? 141Ba + 92Kr + x 1n, what is the number x of neutrons produced?
A. 0 B. 1 C. 2 D. 3
A certain factory whistle can be heard up to a distance of 9.8 km
Assuming that the acoustic output of the whistle is uniform in all directions, at what distance from the factory is the intensity level of the whistle sound equal to 25 dB? The threshold of human hearing is 1.0 × 10-12 W/m2. A) 550 m B) 660 m C) 830 m D) 940 m E) 1,100 m
The basic force that binds materials together is:
a. gravitational force. b. nuclear force. c. buoyant force. d. inertial force. e. electrical attraction.
At t = 0, a particle is located at x = 25 m and has a velocity of 15 m/s in the positive x direction. The acceleration of the particle varies with time as shown in the diagram. What is the position of the particle at t = 5.0 s?
a.
175 m
b.
125 m
c.
138 m
d.
154 m
e.
165 m