Physics, 18.10.2019 09:30 butterscotchsjoqsvoz
Andrew walks through his garden and observes that the shapes of dewdrops are not always the same. suppose he wants to investigate using the scientific method. which questions are testable questions that he can ask to look into the reasons for the different shapes?
a- does the shape of the dewdrop depend on the temperature of the surface?
b- which dewdrop seems to have the most unusual shape?
c- is the material of the surface responsible for the shape of the dewdrop?
d- which shape of dewdrop is the most pleasing to the observer?
e- does the shape of the dewdrop depend on the moisture in the atmosphere?
Answers: 1
Physics, 21.06.2019 22:30
Fft review: linspace, fs, fftshift, nfft 1. generate one second of a cosine of w,-10hz sampled at f, = 100hz and assign it to x. define a tt as your time axis 2. take 64 points fft. 3. as you remember, the dft (which the fft implements) computes n samples of s2t where k-0,1,2, n -1. plot the magnitude of this 64-points fft at range 0 to 63, what do you think of this graph? 4â·to get the x-axis into a hz-frequency form, plot this 64-points fft between-50 to 50 (the 100hz sampling rate) and have n-points between them. 5. according to your figure, what frequency is this cosine wave at? 6. remember that the fft is evaluating from 0 to 2ď€. we are used to viewing graphs from-ď€ to ď€. therefore, you need to shift your graph. 7. now according to your shifted graph. what frequency is this at? 8. note that the spikes have long drop-offs? try a 1024-point dft. note that the peak is closer to 10 and the drop-off is quicker. although, now sidelobes are an issue
Answers: 2
Physics, 22.06.2019 10:30
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Physics, 22.06.2019 11:00
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Physics, 22.06.2019 23:00
According to the image below, which season is about to begin in the southern hemisphere? a. summer b. autumn c. winter d. spring
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Andrew walks through his garden and observes that the shapes of dewdrops are not always the same. su...
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