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(a) With respect to absorption of radiant energy, what distinguishes a greenhouse gas from a nongreenhouse gas?
(b) CH4 is a greenhouse gas, but N2 is not. How might the molecular structure of CH4 explain why it is a greenhouse gas?
A 1.5 kW heater and a 5 hp induction motor are operated from a 208V, three-phase supply. The motor has a full load efficiency of 80% and a full load power factor of 0.85. What is the motor current and what is the total supply current
Design a circuit to hold the lightsfor the indicated time. To help in the solution draw a blockdiagram of the problem, then a circuit diagram, then the requiredcalculations and values for all the circuit elements and finally the results to support..
for a 1-gbps network operating over 5000 km the delay is the limiting factor not the bandwidth. consider a metropolitan
Assume the factory described in the previous problem is fed from a line having an impedance of 0.02 + j0.16-ohm. The voltage at the factory is maintained at 480 V(rms). Find the average power loss in the line before and after the load is added.
Suppose that data are stored on a 1.4-Mbyte floppy diskettes that weight 30 g each. Suppose that an airliner carries 10,000 kg of those floppies at a speed of 1000 km/h over a distance of 5000 km. What is the data transmission rate in bits per sec..
Three loads are connected in parallel across a single-phase source voltage of 240 V (RMS). Load 1 absorbs 12 kW and 6.667 kVAR; Load 2 absorbs 4 kVA at 0.96PF leading; Load 3 absorbs 15 kW at unity power factor.
Two 10.0 ohm resistors are connected in parallel, and this combination is connected in series with a third 10.0 ohm resistor. The resistance of this network is
Consider a multimode silica fiber that has a core refractive index of n1 = 1.48 and cladding index n2 = 1.46. Find the critical angle, numerical aperture and the acceptance angle.
The input resistance of the recorder is unknown andlikely to be variable, but it is greater than 10kΩ. Adeflection of 1 cm per milliampere of cell current with anaccuracy of about ±3 percent is desired. What type of ideal amplifier is best suited ..
When we discussed the work of Galvani and Volta, we noted that Galvani's work was not fully appreciated until the development of instruments capable of detecting and amplifying the small biopotentials present in living organisms.
When the scope probe is properly calibrated, it can be modeled as a 9[M Ohm] resistor in parallel with a capacitor having a capacitance l/9th that of the oscilloscope input capacitance.
design a PCM system that converts an analog signal to digital signal. specify the sampling frequency and the number of quantization levels you pick. the signal to quantization noise ratio must be higher than 57 dB.
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