Wouldn't it be 1? If you replace the carboxyl group with another hydrogen, you get C11 H20. This follows the CxH2x-2 pattern that is characteristic of alkynes, which have 1 triple bond. So the only double bond you have is the one in the carboxyl group (correct me if I'm wrong).
Both books that you have are wonderful (not only information-wise; they're also good reads); I am currently reading The Edge of Physics. You could start with either one (sorry if that isn't very helpful).
I would suggest Stephen Hawking's A Brief History of Time (if you haven't read it...
Part b is right, but for part a i got 1117Hz. Shouldn't the frequency be greater in part a since the sound wave is moving at a greater speed relative to you (when you factor in the relative speed of the medium)?
While studying the Doppler effect at school, it struck me as strange that the following two problems have different solutions:
a) you are moving at 40 m/s toward a source that is making a sound with a frequency of 1000 Hz. What frequency do you hear? (speed of sound= 340 m/s)
b) The...
You did rearrange the formula correctly, but you used F*d for kinetic energy, which is incorrect - F*d is used to find the total change in energy (work), and you used this correctly to answer part a. In order to use that equation to find velocity, you would have to know its kinetic energy...
To answer your first question, gravity bends electromagnetic waves as they travel through space. Although EM waves travel in straight paths through space, gravity is essentially the bending of space-time, so the path of the wave is bent as well.