
(a)
Interpretation:
The term thermoplastic is to be defined.
Concept Introduction:
Polymers are the large molecules which are made up of many small repeating units bonded together in linear, branched or cross-linked manner.
They are of two types: natural and synthetic. Natural polymers are those which occur naturally, and synthetic polymers are those which are synthesized or man-made.
(b)
Interpretation:
The term thermosetting plastics is to be defined.
Concept Introduction:
Polymers are the large molecules which are made up of many small repeating units bonded together in linear, branched or cross-linked manner.
They are of two types: natural and synthetic. Natural polymers are those which occur naturally, and synthetic polymers are those which are synthesized or man-made.
(c)
Interpretation:
The term elastomer is to be defined.
Concept Introduction:
Polymers are the large molecules which are made up of many small repeating units bonded together in linear, branched or cross-linked manner.
They are of two types: natural and synthetic. Natural polymers are those which occur naturally, and synthetic polymers are those which are synthesized or man-made.
(d)
Interpretation:
The term thermoplastic elastomer is to be defined.
Concept Introduction:
Polymers are the large molecules which are made up of many small repeating units bonded together in linear, branched or cross-linked manner.
They are of two types: natural and synthetic. Natural polymers are those which occur naturally, and synthetic polymers are those which are synthesized or man-made.

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Chapter 16 Solutions
Essentials Of Materials Science And Engineering
- For the design of a shallow foundation, given the following: Soil: ' = 20° c' = 52 kN/m² Unit weight, y = 15 kN/m³ Modulus of elasticity, E, = 1400 kN/m² Poisson's ratio, μs = 0.35 Foundation: L=2m B=1m Df = 1 m Calculate the ultimate bearing capacity. Use the equation: 1 - qu = c' NcFcs Fcd Fcc +qNqFqsFqdFqc + ½√BN√Fãs F√dƑxc 2 For '=20°, Nc = 14.83, N₁ = 6.4, and N₁ = 5.39. (Enter your answer to three significant figures.) qu = kN/m²arrow_forwardA speech signal has frequencies in the range 50- 3500 Hz. The signal is sampled at Nyquist sampling rate and the resulting pulses are transmitted over PAM and PCM systems. 1- Calculate the minimum bandwidth of the PAM system. 2- Calculate the minimum bandwidth of the PCM system, when the pulses are quantized into 121 levels B) Draw the signaling waveform (line codes) for the binary sequence 10110001 using (Unipolar NRZ, Bipolar RZ, Bipolar NRZ, Manchester code, Differential Manchester (split phase).arrow_forwardA 2.0 m wide strip foundation carries a wall load of 350 kN/m in a clayey soil where y = 15 kN/m³, c' = 5.0 kN/m² and ' = 23°. The foundation depth is 1.5 m. For ' = 23°: Nc = 18.05; N₁ = 8.66; Ny = = = 8.20. Determine the factor of safety using the equation below. qu= c' NcFcs FcdFci+qNqFqsFq 1 F + gd. 'qi 2 ·BN√· FF γί Ysyd F (Enter your answer to three significant figures.) FS =arrow_forward
- 8-1) similar to Lathi & Ding, Prob. P.5.1-2 The figure below shows the Fourier spectra of signals of g,(t) and g₁(t). Determine the Nyquist rate and the corresponding sampling interval for signals of g,(t), g,(t), g₁(1) - g¸(1), g¸³(t), and g₁(1)g₁(1). Hint: Use the frequency convolution and the width property of convolution. G₁(f) G₂(f) -8000 0 8000 f -20000 10 20000 farrow_forward• We will use the Wattmeter to find the average power supplied/absorbed by each component. The following figure shows how to connect the Wattmeter to measure the average power absorbed by the resistor. Note that the Wattmeter consists of a Voltmeter and an Ammeter. The Voltmeter must be connected in parallel with the component and the Ammeter must be connected in series with the component. You must pay attention to the polarity of the voltage across the component as well as the direction of the current flowing through the component. 5Vpk 1kHz 30° ww 40 Z=A-JB Wattmeter-XWM1 2.503 W Power factor: 1.00000 Voltage Current • • Similarly connect a second Wattmeter to measure the average power supplied by the source. Connect a third Wattmeter to measure the average power in the capacitor. Does this value agree with the theoretical value? Perform Interactive Simulation under Analysis and Simulation. Double click on Wattmeters to see the average power values. Note that the Wattmeter also…arrow_forward• We will use the Wattmeter to find the average power supplied/absorbed by each component. The following figure shows how to connect the Wattmeter to measure the average power absorbed by the resistor. Note that the Wattmeter consists of a Voltmeter and an Ammeter. The Voltmeter must be connected in parallel with the component and the Ammeter must be connected in series with the component. You must pay attention to the polarity of the voltage across the component as well as the direction of the current flowing through the component. 5Vpk 1kHz 30° ww 40 Z=A-JB Wattmeter-XWM1 2.503 W Power factor: 1.00000 Voltage Current • • Similarly connect a second Wattmeter to measure the average power supplied by the source. Connect a third Wattmeter to measure the average power in the capacitor. Does this value agree with the theoretical value? Perform Interactive Simulation under Analysis and Simulation. Double click on Wattmeters to see the average power values. Note that the Wattmeter also…arrow_forward
- 8-3) Bandpass sampling A bandpass signal is confined to the frequency range from 7.5 to 10.5 kHz. Find the allowed ranges of the sampling rate for this signal. Sketch the amplitude spectrum of a hypothetical message, the amplitude spectrum of the sampled signal, and the transfer function of a suitable recovery filter if the sampling rate is chosen in the center of the lowest range available.arrow_forward8-4) Similar to Lathi & Ding, Prob. P.5.1-5 6.1-4 A low-pass signal g(t) sampled at rate of fs > 2B needs reconstruction. The sampling interval is Ts = 1/fs. (a) If the reconstruction pulse used is p(1) = [1 - specify the equalizer filter E(f) to recover g (1). (b) If the reconstruction pulse used is p(t) = П Ts/2 specify the equalizer filter E(f) to recover g (1).arrow_forward8-2) Lathi & Ding, Prob. P.5.1-1 Determine the Nyquist sampling rate for the following signals, explaining your method: (a) 4 sinc(420лt); (b) 5sinc² (6500лt); (c) sinc(1800лt)+ sinc² (2000лt); (d) 2 sinc(500лt) sin(300л)arrow_forward
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