Physics, 27.05.2021 22:10 christinafish9303
19. A stone with a mass of 0.5 kg falls from a
cliff. The stone was initially at rest when it began
falling. Calculate the height from which the stone
must fall in order for the kinetic energy of the
stone to be 200 J just before it hits the ground. (g
= 9.81 m/s?). Round your answer to two decimals
and show the correct units of measure.
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, 21.06.2019 22:40
In physics the desire of an object to keep doing what it is doing is termed?
Answers: 1
Physics, 22.06.2019 21:30
Aperson touches a large chunk of ice with their hand and remarks, “this is making me cold.” explain what this person is feeling. is the ice transferring “cold” to the person? is there a heat transfer occurring? explain.
Answers: 1
19. A stone with a mass of 0.5 kg falls from a
cliff. The stone was initially at rest when it began...
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