LoRa is a wireless technology that enables low-power wide-area networks (LPWANs) for direct person-to-person communications.
Answer the following statement true (T) or false (F)
False
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The smoke shelf is built by rolling the back wall of firebrick lining forward until it meets the rear flange of the fireplace damper.
Answer the following statement true (T) or false (F)
What are the common causes of fouling in a heat exchanger? How does fouling affect heat transfer and pressure drop?
What will be an ideal response?
How does the result compare with the corresponding equation for an ideal gas?
Z = 1 + B?P + C?
+ D?
+ . . .
Derive an equation for the work of mechanically reversible, isothermal compression of 1 mol of a gas from an initial pressure 
to a final pressure 
when the equation of state is the virial expansion truncated to:
Z = 1 + B?P
For the circuit shown in Figure P15.41, let vin be a 1-kHz sinusoidal signal with 0° phase angle, 0 VDC offset, and 20-V peak-to-peak amplitude. Let vG be a rectangular pulse train, with pulse width 10 ?s and period 100 ?s with the leading edge of the first pulse at t = 0.
a. Sketch vo if the RC circuit has a time constant equal to 20 ?s.
b. Sketch vo if the RC circuit has a time constant equal to 1 ms.
