Consider a procedure such as changing a car’s tire or replacing a bicycle tire, and list the necessary steps and tools needed for each step. Devise alternative sequences for performing the same task.
What will be an ideal response?
In this situation, students need to think about each step since they will often skip over steps. In changing a tire, reading the repair manual may be the first step. The car needs to be positioned so it can be jacked up without rolling. The spare needs to be located and removed and placed near the tire to be replaced. The jack needs to be found and removed from its location in the car, inserted or located to jack up the car; and cranked until the car begins to lift. The lug nuts need to be loosened, with the car rising until the tire clears the ground sufficiently for an infl ated tire to be put on. The lug nuts need to be removed, the tire removed, the new tire placed on the car, and the lug nuts put back on and tightened, going around several times. The car needs to be lowered until the tire just touches the ground, the lug nuts securely tightened, the jack cranked down, and then removed from the car. The fl at tire and the jack are placed in the car.
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In 2007, the weighted average combined fuel deficiency of cars and light trucks in the United States, combined, was 8.67 km/L. The average vehicle traveled 18,861 km in 2007. The amount of CO2 emitted per gallon of gasoline burned is 8.92 kg. Assume for the following calculations that the 2007 data are applicable to all registered vehicles. In 2010, there were nearly 32 million registered vehicles in California.
a. Calculate the emissions of CO2 from California in 2010. b. It is estimated that there were approximately 250 million registered vehicles in the United States in 2010. Calculate the emissions of CO2 from all automobiles in the United States in 2010. c. By the year 2050, it is estimated that there will be perhaps 300 million automobiles in the United States. If this happens, and we assume driving conditions stay approximately the same, what would the CO2 emissions from automobiles be in 2050 in the United States? d. In 2012, India was estimated to have about 15 million automobiles. While driving conditions and automobile types in India are much different from those in the United States, what will the emissions of CO2 be from automobiles in India if the gas mileage and driving patterns were the same as those in the United States? e. By the year 2050, India is expected to be the largest automobile market in the world. Goldman Sachs has estimated that there will be more than 610 million automobiles in India by 2050. If this happens, and we assume driving conditions stay approximately the same, what would India’s CO2 emissions from automobiles be in 2050? f. Create a bar graph illustrating the number of vehicles and CO2 emitted from scenarios in parts (a) through (e). What will be an ideal response?
The use of nailing flanges in windows also requires the use of
A) retainer clips. B) two L-shaped trims. C) none of the above. D) both A and B. E) either A or B.
The orifice tube divides the high pressure side of the system from the low pressure side
A) True B) False
A power device is used to switch the current flow on or off.
Answer the following statement true (T) or false (F)