Phosphorus availability in acid soils is constrained by the presence of significant quantities of reactive ________

A) sulfur B) boron. C) calcium D) magnesium E) iron


E

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Suppose the propagation delay is ?, SIFS is ?, DIFS is 3?, and RTS and CTS are 5?, respectively, for CSMA/CA with RTS/CTS.

(a) What is the earliest time for the receiver to send the CTS message? (b) If the data packet is 100? long, what is the shortest time for the receiver to send the ACK signal? (c) Explain why SIFS is kept smaller than DIFS. (d) Can you make SIFS = 0?

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An adiabatic pump receives liquid water at 25°C and 100 kPa. The water exits at 30.0 MPa and 40.0°C. Using your pump model, plot the power required for this pumping operation for entering volumetric flow rates ranging from 0.001 m3/s to 1.0 m3/s.

Given: P1 = 100 kPa; T1 = 25°C; P2 = 30,000 kPa; T2 = 40°C Water (Take State 1 as the inlet, State 2 as the outlet.) Assume: Q?=0 (adiabatic). For a compressor, assume steady-state, steady-flow, single-inlet, single-outlet flow, with ?KE = ?PE = 0 What will be an ideal response?

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All of these are important convenience factors except.

A) Payment methods B) Size of parking lot C) Size of buildinig D) Hours of operation

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In the accompanying figure, the blue arrows point to ____ lines.

A. construction B. object C. reference D. extension

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