Given the measurements of soil water pH and water saturation for each of the
two sites, and assuming that all other things that affect plant growth such as
orientation, slope, and climate are the same, which of the two sites is better
suited for growing crop plants? Include in your answer all the evidence that
you have gathered in the experiments on physical soil properties.
What will be an ideal response?
Encourage your students to consider the optimal soil pH for the crop they propose
to grow and the water requirements of the crop plant in developing their answer.
They should also consider any specific temperature requirements, such as a
minimum number of days below a critical temperature, and relate this to the aspect
of the site.
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A rubber object is in contact with nitrogen (N2) at 298 K and 250 kPa. The solubility of nitrogen gas in rubber is 0.00156 kmol/m3•bar. The mass density of nitrogen at the interface is
(a) 0.049 kg/m3 (b) 0.064 kg/m3 (c) 0.077 kg/m3 (d) 0.092 kg/m3 (e) 0.109 kg/m3 T=298 [K] P_N2_gasside=250 [kPa]*Convert(kPa, bar) S=0.00156 [kmol/m^3-bar] "Table 14-7" C_N2_solidside=S*P_N2_gasside M_N2=MolarMass(N2) rho_N2_solidside=C_N2_solidside*M_N2
Electrical controls such as switches ________
A) May be on either the source or ground side of the circuit B) Control electrical flow in the circuit C) Both A and B D) Neither A nor B
Which of these is a true statement regarding availability for work?
a. It is okay to be absent as long as you call in. b. Being on time means being no more than 15 minutes late. c. It is not necessary to call in because employers hire extra people, knowing that employees occasionally like to take a day off. d. Unless you are ill or have a family emergency, you should be on the job by the specified time.
Metal stairways are completely fabricated _
a. off site b. on the lower level of the building under construction c. from the top down d. on the upper level of the building under construction