Question Drag the tiles to the correct boxes to complete the pairs.

A property of a substance can be measured or observed. Match each attribute of the substance with the property that describes it.

state

melting point

boiling point

electrical conductivity

acidity

density

Metals are good conductors of current.

Water changes from solid to liquid at 0°C,

which is equivalent to 32°F.

Vinegar has a pH of 3.0.

The mass of a cubic centimeter of iron is

7.87 grams.

The substance is a yellow gas.

Ethanol becomes a gas at 78°C, which is

equivalent to 173°F.

With these questions , 15 pts & brainliest

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

Jessie ran 5000 meters from the cops and an average speed of 6 meters / second before he got caught . how long did he run?