Copy of Am-15 Speak Up

4. Determine the mass of a Si proof mass 400µm by 400um by 1.0um thick. If such a mass were suspended from a fixed free cantilever of length 400um thickness 1um and width 10um (see exercise 3) what would be the resonant frequency of the system? If the beam and proof mass were used as an accelerometer what would the sensitivity be? Answer in nm per g. (Density Si 2300Kgm³)

Equal loudness curves represent the results of measurements of    A absolute threshold.   B perceived magnitude.   C single cell recordings.   D neuroimaging procedures.

1.Radar is used to determine distances to various objects by measuring the round-trip time for an echo from the object. 1) How far away is the planet Venus if the round-trip echo time is 1000 s? 2) What is the echo time for a car 75 m from a Police radar unit?

1. The state highway patrol radar guns use a frequency of 9.05 GHz. If you're approaching a speed trap driving 31.3 m/s, what frequency shift will your FuzzFoiler 2000 radar detector see? 2. The radar gun measures the frequency of the radar pulse echoing off your car. By what percentage is the measured frequency different from the original frequency? (Enter a positive number for a frequency increase, negative for a decrease. Just enter a number, without a percent sign.)

A state highway patrol car radar unit uses a frequency of 6.00×10⁹ Hz. Part A What frequency difference will the unit detect from a car receding at a speed of 65.5 m/s from a stationary patrol car? Af= Submit ——| ΑΣΦ Previous Answers Request Answer ? Hz

& Snipping Tool O X File Edit Tools Help New Mode Delay - For Å = 9.5å – 83+ 6k and B = –7î + 7.1 – 6k then what is the z component of Á x B? Answer: 6:39 PM O Type here to search 日 O G ENG amazon 13°C 2021-10-17 %2:

a. Explain the empirical relationship between mean ,median and mode for the data of your own field physics. Ilustrate graphically relative position of mean, median and mode for frequency curve which are skewed to right and to be left. b. Explain in your own words that how this course "Probability and Statistics" will be helpful to solve different problems in the field of Physics? Your answer should not be matched with other fellows. THE END

1. The single-phase half-controlled rectifier shown in Fig.1 operating at a triggering angle of a=60° from A.C. source Vs = 300 sinot. Assuming the load is RL, where, R=102,L=20 mH, at 60 Hz. Assume the distinction angle ß = 185 degree. 2. Determine the following: A. express Vas of the load as a function of a, and calculate its value. B. Determine an expression for the current in the circuit. C. The power absorbed by the resistor. T IL + 1:1 VL Vp = Vmsinot| D ella ll

Item 9 Learning Goal: To learn the properties of logarithms and how to manipulate them when solving sound problems. The intensity of sound is the power of the sound waves divided by the area. on which they are incident. Intensity is measured in watts per square meter, or W/m². The human ear can detect a remarkable range of sound intensities. The quietest sound that we can hear has an intensity of 10-12 W/m², and we begin to feel pain when the intensity reaches 1 W/m². Since the intensities that matter to people in everyday life cover a range of 12 orders of magnitude, intensities are usually converted to a logarithmic scale called the sound intensity level 3, which is measured in decibels (dB). For a given sound intensity I, B is found from the equation B = (10 dB) log (1) where Io = 1.0 × 10-12 W/m². Part A What is the value of log (1,000,000)? Express your answer as an integer. ► View Available Hint(s) The logarithm of x, written log(x), tells you the power to which you would raise…

Item 11 Most of the galaxies in the universe are observed to be moving away from Earth. Suppose a particular galaxy emits orange light with a frequency of 5.000 × 10¹4 Hz. Part A If the galaxy is receding from Earth with a speed of 4125 km/s, what is the frequency of the light when it reaches Earth? Express your answer to four significant figures and include appropriate units. μA Value Submit Units Request Answer ?

1. For the following continuous time signals, determine the fundamental angular frequency w, and the Fourier coefficients Cg a) x(t) = 2 cos + sint b) x(t) = 3 – 2 cos nt + sin? c) x(t) = 2 cos sin 2. Determine the Fourier Coefficients C, for the periodic sequence x[n] shown in below. N/3

Visible light corresponds roughly to the range of wavelengths from 400 nm (violet) to 700 nm (red). 1 nm = 1 nanometer = 10-9 m. What is the frequency of visible light at a wavelength of 600 nm? f= Hz Enter your answer above using scientific notation with the format x.yzEq = x.yz x109. For example, 1.23 x 10-9 is entered as 1.23E-9. What is the wavelength of a visible light wave with a frequency of 4.64 x 10¹4 Hz? λ = nm

A C The value of: A = 5 ms C= 15 ms Peak to peak = 10o D Figure 1 (а) From Figure 1 above, identify the frequency (f), value of time at A, B, C, D, period (T) and the RMS.

A fire truck is moving at 12 m/s, and a car in front of the truck is moving in the same direction at 44 m/s. If a 152-Hz siren blares from the truck, what frequency is heard by the driver of the car at v = 343 m/s? No need to include the unit. Write your answer in whole numbers. Round your answer to 0 decimal places. Add your answer

Trial  Square of Frequency f 2 (Hz2) (x- value) Mass of m1 (g) (Y-value) 1 1.10 46.4 2 1.44 64.1 3 1.87 81.0 4 2.43 96.8 5 2.59 106.9 6 2.95 122.3 can you do draw the graph on the graph paper that I attached by using the table above? please us the graph paper and it should be linear. thank you

The acoustic impedance is defined Select one: a. the product of Travel time and density b. the product of Reflection coefficient and velocity O c. the product of Velocity and depth С. d. the product of Wavcelength and velocity e. the product of Velocity and density

In an attempt to find the frequency of a wave is drawn, the time base was set to 5 ms per division and a trace of the waveform is as shown. What is the frequency? O A. 16.7 Hz O B. 33.3 Hz O C. 50.0 Hz O D. 100 Hz

A sinusoidal transverse wave travels along a long, stretched string. The amplitude of this wave is 0.0813 m, its frequency is 4.27 Hz, and its wavelength is 1.05 m. What is the shortest transverse distance d between a maximum and a minimum of the wave? d = m How much time At is required for 77.9 cycles of the wave to pass a stationary observer? At = Viewing the whole wave at any instant, how many cycles N are there in a 31.3 m length of string? help about us careers privacy policy terms of use contact us Show All V VS T.jpeg Free-Fall-Phet.docx v VS T.jpeg free fall.png F12 F9 F10 80 F6 F7 & * delete % %3D 6 8 9 4 5

Consider a wave described by the wave function y (x,t)%3D0.65m sin 6T m x+ 8TC st+), find the -1 -1 TC 3 frequency of wave? a. 1.33 Hz O b. 2.22 Hz O C. 1.67 Hz O d. 0.75 Hz Next page File Upload - Quiz - 1- -SCL Activity-Section Ir. Maroof) Jump to..

2 A radar system operating at frequency of 15 GHz. The target speed resolution is given as 10 m/s. If the number of filters implemented for detection of Doppler frequency shift is 115. a. Calculate the target speed range. b. Calculate the velocity of cach target. c. If the system used is used as speed monitoring in a road with maximum speed = 120 km/Hr. What will be maximum speed in km/Hr that the Radar classify as not over speeding. Assume operating frequency and Doppler shift remains the same. Give justification to your answer.

Match the variable to the correct unit   Wavelength                              ______ Hz Frequency                                ______ Seconds Period (T)                                 ______ Meters   A dog is running at 10mph (miles per hour). What is the dog’s speed in meters per second? (1609 meters in a mile)                   How far would this dog run in 1.5 hours?                     How long would it take this dog to get to the end of the park, which is 3.7 meters away?             What is the difference between speed and velocity? A dog swimming in a pool creates waves that peak every 5.6 seconds. The waves highest point is at 0.2m that move at a velocity of 4 meters per second. What are the time and space sine functions of these waves?                                     An explorer measures the distance between her and the end of a cave as 3.4 meters. If she were to yell, how long would it take for her to hear her echo? (The speed of sound in air is…

Question 9 Find the wavelength in air of an 95-Hz sound wave at 311 m/s, which is one of the lowest frequencies that are detectable by the human ear. No need to include the unit. Write your answer in whole numbers. Round your answer to 0 decimal places.

Q5. Consider the Nyquist plot of the frequency response of the open-loop system 10000 G.(s) (s+ 1)(s+10)(s + 50) which is shown in Figure Q5 below. Imaginary Axis 0.5 Real Axis -08 -0.5 -0.5 Figure Q5 2 Tutorial 2: Frequency Response Analysis (a) Write down the expression of the frequency response for this system, clearly showing the overall gain. (b) Is the corresponding closed-loop system with unity feedback gain stable or not? Explain why. (c) Determine the approximate value of the gain margin from Figure Q5. What is the maximum value of an additional gain K for which the closed loop would still be stable? (d) Determine the approximate value of the phase margin from Figure Q5. Assuming that the corresponding point on the plot occurs at 12rad/s, what is the maximum delay which can be added to the system before the closed loop would become unstable?

The 21-cm line of atomic Hydrogen is very common throughout the Universe that some scientists suggest that if we want to send messages to aliens we should use the frequency of π times this frequency (why?). What is the frequency they suggest to use? A. 4.49 GHz B. 1.43 GHz C. 2.75 GHz D. 3.62 GHz   Is the answer B? The use of frequency π times is to avoid destructive interference such that the radio message could travel through space without distortion? Thank you very much!

If the periodic time of triangle wave is determined to be 10 microseconds, what is the frequency of the wave? Select one:a. 1000 Hzb. 100 Hzc. 100 kHzd. 10 kHz

Draw a plot of the variation of amplitude versus ω for an amplitude modulated wave. Define modulation index. State its importance for effective amplitude modulation.

Using dimensional analysis what is the expression for frequency (w) in terms of m, g, d and l.

A standing-wave pattern is set up by radio waves between two metal sheets 2.80 m apart, which is the shortest distance between the plates that produces a standing wave pattern. What is the frequency of the radio waves? 107 Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. MHz

Part A AM radio signals have frequencies between 550 kHz and 1600 kHz (kilohertz) and travel with a speed of 3.0x10° m/s. What are the wavelengths of these signals? Express your answers using two significant figures separated by a comma. ? Amin, Amax Submit Request Answer Part B On FM the frequencies range from 88 MHz to 108 MHz (megahertz) and travel at the same speed. What are their wavelengths? Express your answers using two significant figures separated by a comma. Ηνα ΑΣφ ? Amin, Amax m %3D

MULTIPLE CHOICE. Read the following items carefully. Write the letter of the BEST answer on the space provided before each number. Use CAPITAL letters.   ______1. Televisions (TV) are a common appliance in many households. The frequency of the TV is on the order of 108 Hz. The wavelengths of the TV are on the order of which of the following?  A. kilometers       B. meters              C. centimeters                      D.micrometers   ______2. The wavelength of the radio with a frequency of 104 Hz is on the order of which of the following: A. kilometers   B. meters              C. centimeters                      D.micrometers   ______3. Speed of sound in air is a function of which of the following? A.wavelength     B. frequency              C. temperature                     D.amplitude   ______4. The unit of sound intensity level is: A. decibels            B. hertz                      C. watts                                 D. m/s   ______5. A Volkswagen car is approaching a…

MULTIPLE CHOICE. Read the following items carefully. Write the letter of the BEST answer on the space provided before each number. Use CAPITAL letters.   ______1. Televisions (TV) are a common appliance in many households. The frequency of the TV is on the order of 108 Hz. The wavelengths of the TV are on the order of which of the following?  A. kilometers B. meters                   C. centimeters                      D.micrometers   ______2. The wavelength of the radio with a frequency of 104 Hz is on the order of which of the following: A. kilometers B. meters                   C. centimeters                      D.micrometers   ______3. Speed of sound in air is a function of which of the following? A. wavelength B. frequency              C. temperature                     D.amplitude   ______4. The unit of sound intensity level is: A.decibels            B. hertz                      C. watts                                 D. m/s   ______5. A Volkswagen car is approaching a…