What is the formula of the compound formed from the ions of calcium and bromine?
a. CaBr3
b. CaBr
c. CaBr2
d. Ca2Br3
e. None of these
c
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Exhibit 17-1
The figure below shows a sine wave at one point of a string as a function of time.
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Use the exhibit to answer the following question(s).
Refer to Exhibit 17-1. Which of the graphs below shows a wave where the amplitude and the frequency are doubled?
A.
B.
C.
D.
E.
What is the first law of thermodynamics for a system?
What will be an ideal response?
Why are sound waves not polarizable?
a. Because they are not electromagnetic. b. They are not transverse. c. They are not longitudinal. d. But this is readily possible!
Wave #1 has frequency f1 and wavelength ?1 . Wave #2 has frequency f2 = 6 f1 and wavelength ?2 = 2?1 . How does the speed v2 of wave #2 compare with the speed v1 of wave #1?
a. v2 = 12v1 b. v2 = 6v1 c. v2 = 1.5v1 d. v2 = v1/6