Concatenation two arrays means chaining them together. for sound, this means putting signals together to hear them one at a time. in matlab, two vectors can be concatenated through the notation:
zz = [xx, yy];
run a script or function for each example for your lab doc.
1. run soundsc() on an input signal/sinusoid. using = 11025 , instantiate a time vector of 0.5 second duration. create a vector x1 of samples of a sinusoid with amplitude = 100, angular frequency = ), and phase phi = − 3 . play the vector and listen to the output. note: if soundsc() does not work for you, in this case use audiowrite() (run audiowrite) to create a .wav file. the .wav file can be played by most media players.
2. run soundsc() on a second input signal/sinusoid: create a vector x2 of samples of a sinusoid with = 80, = ), and phi = 4 . use = 11025 and obtain a number of samples equivalent to a 0.8 second duration. play the vector and listen to the output.
3. concatenate the input signals together: concatenate x1 and x2 into a vector x, leaving a duration of 0.1 seconds of silence in between.
hint: use
listen to this new signal to verify that it is correct.
4. plot and identify the two input signals. execute the following commands, and plot: > > tt = (1/11025)*(1: length(xx)); > > plot(tt, xx); this will plot a huge number of points, but you should be able to discern the "envelope" of the signal. verify that the amplitude changes from 100 to 0, and then from 0 to 100 at the correct times.
5. different sampling frequencies affecting pitch: call soundsc() on x again (or use audiowrite() and play the output file), but this time use = 22050 .
describe how the duration and pitch of the signal were affected and explain.
6. using the t vector from section 2.1.4 of this lab, create sounds for the following frequencies:
[523, 587, 659, 698, 784, 880, 988, 1047]
concatenate the sounds together, and *submit the concatenated sound (a musical scale) as a single .wav file using audiowrite. remember to include code and .wav file.
question 11: how does this sound compare to the output of the previous sound?

Atank holds 1000 gallons of water, which drains from the bottom of the tank in half an hour. the values in the table show the volume v of water remaining in the tank (in gallons) after t minutes.t(min) 5 10 15 20 25 30v(gal) 694 444 250 111 28 0(a) if p is the point (15, 250) on the graph of v, find the slopes of the secant lines pq when q is the point on the graph with t = 5, 10, 20, 25, and 30.(b) estimate the slope of the tangent line at p by averaging the slopes of two secant lines.(c) use a graph of the function to estimate the slope of the tangent line at p. (this slope represents the rate at which the water is flowing from the tank after 15 minutes.)show all steps.

Anybody wanna ? (picture included? )

Question 1 what is amperage? is the rate of doing work. is the rate of flow of protons in electric current. represents the amount of pressure behind electron flow. is the rate of flow of electrons in electric current. 2 points question 2 what is voltage? is the rate of doing power. represents the amount of pressure behind electron flow. is the rate of doing work. is the rate of flow of electrons in electric current. 2 points question 3 what is power? is the rate of flow of protons in electric current. is the rate of flow of electrons in electric current. is the rate of doing work. represents the amount of pressure behind electron flow. 2 points question 4 if we multiply volts times amps we get what? power circuit work current 2 points question 5 what are two ways alternating currents are similiar? in both ac and dc electrons flow in the same pattern. in both ac and dc, the flow of electrons changes directions back and forth. both ac and dc are only possible in certain materials with atoms that will allow electron flow. both ac and dc involve the flow of electrons. 4 points question 6 how does the flow of electrons flow in an alternating current? the flow of electrons is always slower in an alternating current than within a direct current. the flow of electrons is not constant and forward; it changes direction back and forth. electrons flow from from a higher affinity to that of a lower affinity. electron flow is constant and only in a forward direction. 2 points question 7 what is the flow like in a direct current? the flow of electrons is not constant and forward; it changes direction back and forth. the flow of electrons is constant and only in a forward direction. the flow of electrons go from a higher affinity to a lower affinity. the flow of electrons are always faster in a direct current. 2 points question 8 how is an electric current able to flow? electrons flow from the higher affinity to lower affinity and electrical current is generated. protons flow from the higher affinity to lower affinity and electrical current is generated. the movement of protons from one atom to another leads to an electric charge. the movement of electrons from one atom to another atom in a line results in a flow of electric current. 2 points question 9 how do electrons move from the two different types of metal in a battery? protons flow from the metal with the lower affinity to the metal with higher affinity and electrical current is generated. electrons flow from the metal with the lower affinity to the metal with higher affinity and electrical current is generated. electrons flow from the metal with the higher affinity to the metal with lower affinity and electrical current is generated. protons flow from the metal with the higher affinity to the metal with lower affinity and electrical current is generated.