Physics, 12.03.2020 02:02 chrisraptorofficial
Let's say your favorite radio station is "at 99.9 on the FM dial", which means it is broadcast using electromagnetic waves with a FREQUENCY of 99.9 MHz (megahertz, or millions hertz). What WAVELENGTH do these waves have
Answers: 3
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 10:00
There are two-speed cameras, one in an are where the speed limit is 30 km/h and another where the speed limit is 50 km/h. in which will there be a smaller time interval between the photographs? explain your answer.
Answers: 1
Physics, 22.06.2019 19:30
A1.5m wire carries a 2 a current when a potential difference of 52 v is applied. what is the resistance of the wire?
Answers: 1
Physics, 22.06.2019 20:30
Which statement best describes the direction of the buoyant force on any object? a. opposite the force of gravity b. in the same direction as the weight c. in the direction of motion of the object d. opposite the direction of motion of the object
Answers: 1
Let's say your favorite radio station is "at 99.9 on the FM dial", which means it is broadcast using...
Chemistry, 10.03.2020 00:28
Social Studies, 10.03.2020 00:28
Computers and Technology, 10.03.2020 00:28
Mathematics, 10.03.2020 00:28
Mathematics, 10.03.2020 00:29
History, 10.03.2020 00:29
Computers and Technology, 10.03.2020 00:29
Computers and Technology, 10.03.2020 00:29
Mathematics, 10.03.2020 00:29