So right now you think you're not moving? really? Guess again. The Earth is rotating on its axis so if you were on the equator you would have traveled 40,000 km each day
(just a bit more than 460 meters each second or a bit over 1,000 mi/hr), but it's way
worse than that! We are traveling around the sun at a speed of 30,000 m/s. Just in
case you were wondering, the mass of the earth is about 6.0 x 1024 Kg.
a. What would be your momentum (let's say you have a mass of 100 Kg) from the
rotation of the earth alone if you were on the equator?
b. What is the momentum of the earth traveling around the sun?

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

Inside of a windmill or a dam is a that is used to transform one type of energy into electrical energy. a. motor b. generator c. transformer d. power pack

Astep up transformer has 250 turns on its primary and 500 turns on it secondary. when the primary is connected to a 200 v and the secondary is connected to a floodlight that draws 5a, what is the power output? show all of your work.