While driving, you should look 10 to 15 second ahead of you:
a. because it's a legal requirement
b. and focus on the middle of the road
c. to see potential hazards early
Answer: c. to see potential hazards early
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N2 gas fills a flexible container with an initial volume of 0.05 m3, a temperature of 30oC, and a pressure of 800 kPa. The N2 gas is to expand in an isothermal manner until the pressure is 100 kPa.
(a) Determine the amount of heat transfer required for this process in order to maintain an isothermal nature. (b) Develop a computer model to simulate this process, and then plot the amount of heat transfer required for an isothermal process for final pressures ranging between 100 kPa and 600 kPa. Given: N2; T1 = T2 = 30oC; P1 = 800 kPa; V1 = 0.05 m3; P2 = 100 kPa Assume: N2 behaves as an ideal gas with constant specific heats: cv = 0.743 kJ/kg-K; R = 0.2968 kJ/kg-K; ?KE = ?PE = 0.
For replacement of ungrounded receptacles, which of the following statements is not true?
A. If a grounding means exists in the box, a grounding-type receptacle is required. B. If a grounding means does not exist in the box, a nongrounding-type receptacle is generally permitted. C. A GFCI-type receptacle is permitted to replace a nongrounding-type receptacle even though there is not an equipment grounding conductor in the box. D. An equipment grounding conductor is permitted to be installed from the GFCI receptacle to grounding-type receptacles on the load side.
What is the definition of a Btu?
What will be an ideal response?
A mixed number is the sum of a whole number and a fraction.
Answer the following statement true (T) or false (F)