Lab 9 Wave

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Which of the following statements holds? Select one: Sound waves are transverse waves as the vibration of the wave is perpendicular to the direction of travel. b. Sound waves are transverse waves as the vibration of the wave is parallel to the direction of travel. a. O C. od. Which of the following statements holds? a. ob. Sound waves are longitudinal waves as the vibration of the wave is perpendicular to the direction of travel. Select one: O OC. Sound waves are longitudinal waves as the vibration of the wave is parallel to the direction of travel. od. Solutions of the 1D wave equation are functions of ct+x and ct-x Solutions of the 1D wave equation are functions of cx + t and cx - t Solutions of the 1D wave equation are functions of sin (x) cos(tx) Solutions of the 1D wave equation are functions of ct.x

a) frid Dans for This periodie wave form Vo(k) b) find the porer burned in the load Re <) 2k=Rm c) Change the value of R to maximize P

The main purpose of an oscilloscope is to graph an electrical signal as it varies over time. Most scopes produce a two-dimensional graph with time on the x-axis and voltage on the y-axis. The voltage waveform on the screen looks as shown in the figure below. Here, the vertical resolution of the oscilloscope is set up to be 2 mV/division and the horizontal resolution is 2 ms/division. Time 1. Determine the peak-to-peak amplitude of the wave. Voltage

A new band sensation is playing a concert and recording it for a live album to be released this summer. Select all the statements that are true for when the microphone records the sound. The microphone changes the wave from mechanical wave to an electromagnetic wave. The recorded waves are electromagnetic waves. The microphone does not change the wave type. The recorded waves are mechanical waves. The frequency or amplitude of the waves will not change in the microphone. The frequency or amplitude of the waves will change in the microphone. ✓ The microphone changes the wave from an electromagnetic wave to a mechanical wave. >

Q1(a) Analyze the polar form of this waveform in Figure Q1(a). 60 310 Figure Q1(a)

The direction of the oscillation of an electric field is called..................

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What happend to the wave form?

Write code to produce the wave form as following(The phase change is pi) Serial binary data BPSK VA AMMA AMA Phase changes

8. Liquids with solid impurities a) Have higher dielectric strength b) Of large size have higher dielectric strength c) Have lower dielectric strength as compared to pure liquids d) None of the above 9. Peak to peak ripple is defined as a) the difference between average de voltage and peak value b) the difference between maximum and minimum de voltage c) the difference between maximum ac and average de voltages d) the difference between ac (rms) and average de voltages 10. In a Cockroft-Walton circuit, input voltage 100 kV load current 25 mA, supply frequency 100 Hz, each capacitor 10 nF. The optimum no. of stages for maximum output voltage is a) 1 b) 2 c) 10 d) 35

Question 4 This is realted to #6 on the Waves Introduction Worksheet portion of the document. Graph A Graph B Displaament vs. Position for Random Wiave Displacementvs. Time for Randem Wave -1 -2 -4 -5 Position m) Time (s) What is the frequency of the wave represented by these two graphs? Your answer: 0.25 Hz 0.5 Hz 2 Hz 4 Hz Diaplacement (m) w nds

Inductance is often described as . (circle all that apply) The ability of a component to oppose a change in current The relationship between magnetism and current The ability of a component to store energy in an electromagnetic field The ability of a component to oppose a change in voltage