What height should be the first mowing of the spring for an established and healthy lawn?
a. 1.25 to 1.5 inches c. 1.75 to 2.0 inches
b. 1.5 to 1.75 inches d. 2.0 to 2.25 inches
A
1.25 to 1.5 inches
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0.5 kg of methane is initially at 500 kPa and 25°C. The methane expands in an isothermal process until its final volume is twice its initial volume. Assuming the methane behaves as an ideal gas with constant specific heats, determine (a) the initial volume, (b) the final pressure, (c) the change in specific internal energy and (d) the change in specific enthalpy of the methane.
Given: m = 0.5 kg; P1 = 500 kPa; T1 = T2 = 25°C = 298 K (isothermal process); V2 = 2V1
____ sometimes appear in the surface of a drum or rotor when there has been excessive heat.
A. Swaged lugs B. Hard spots C. Guide pins D. Carbide
The most common form of isometric is the ____ isometric.
A. reverse B. regular C. long-axis D. box E. none of the above
If two or more inductors are connected in parallel (with no interaction of their magnetic fields) the total inductance is found by using the formula ____.
A. LT = L1 + L2 + L3 ... + Ln B. LT = L1 = L2 = L3 ... = Ln C. LT = L1 * L2 * L3 ... * Ln D. 1/LT = 1/L1 + 1/L2 + 1/L3 ... + 1/Ln