Hydrocarbons with a carbon-carbon triple bond are called ______________
Fill in the blank(s) with correct word
alkynes
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Notice that the parallax is greater (the apparent movement is larger) for the person than for the trees, and that the mountains do not appear to shift at all. Why?
A. The amount of parallax depends on an object's size, with greater parallax for larger objects. B. The amount of parallax depends on an object's size, with greater parallax for smaller objects. C. The amount of parallax depends on an object's distance, with greater parallax for more distant objects. D. The amount of parallax depends on an object's distance, with greater parallax for nearer objects.
The amplitude of a system moving with simple harmonic motion is doubled. The total energy will then be
a. 4 times as large b. 3 times as large c. 2 times as large d. the same as it was e. half as much
If one lawn mower causes an 80-dB sound level at a point nearby, four lawnmowers together would cause a sound level of ____________ at that point
a. 92 dB b. 84 dB c. 86 dB d. none of the above
If a solid iron ball is dropped at the surface of the deepest spot in the ocean (the Marianis Trench, about 11 km deep) what would you expect to happen?
1.It would sink to the bottom. 2.It would sink, but it would remain suspended at some great depth before reaching the bottom. 3.It would float near the surface because it is so deep here. 4.It is impossible to tell.