Multiple ! you can answer any one you ! i need fast! calculate the total heat content of 10 kg of ice at -23°c. (hint: a substance at absolute zero, -273o c, has 0 heat content.) 115 kcal 1300 kcal 1400 kcal 1500 kcal how much heat is contained in 100 kg of water at 60.0 °c? (hint: a substance at absolute zero, -273o c, has 0 heat content.) 30 kcal 2.10 x 104 kcal 2.40 x 104 kcal 2.77 x 104 kcal calculate the energy needed to vaporize 10.0 kg of iron (c = 0.110) initially at 2,640°c. 110 16,300

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

Aprisoner is forced to go into one of three rooms, but he can choose which room. the first room is ablaze with fire. the second one is rigged with explosives that will go off as soon as he enters. the third contains a pair of lions who haven't eaten in years. which room should he choose to survive?

Calculate the velocity of a car traveling in a straight path due east with a distance of 16 meters in 2 seconds. question 1 options: a)32 m/s b)32 m/s e c) 8 m/s e d) 8 m/s