What was the forested area in this country 300 years ago? What is it today? Explain how it can be that our smaller
forested area produces more wood today
What will be an ideal response?
At least one-half of the land area in this country was forested 300 years ago. Almost 70 percent (about 738 million
acres) of that area is still forested today. More wood is produced today because so much forest land is actively
managed. A mature forest produces no new wood. As an old tree dies naturally, new trees take its place and the net
production of wood is zero. In addition, some new varieties of commercial trees are faster growers than native trees
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A cylindrical underground storage tank with a diameter of 18.0 ft and a height of 25.0 ft is filled with gasoline. Given a density of 675 kg/m³, determine the mass of the gas in the tank in both lbm and kg. If the average automobile gas tank holds 25.0 gal, calculate the number of autos that may be filled from this underground facility.
What will be an ideal response?
RFS is an acronym for "regardless of feature size" and is assumed for all geometric characteristics unless otherwise specified.
Answer the following statement true (T) or false (F)
There is a special sale on engine oil. If you purchase more than one 12-quart case, you will receive a 5 percent discount. If you purchase six or more cases, you will receive a 10 percent discount. You have two vehicles that require an oil change every 4,000 miles. Vehicle #1 requires four quarts per oil change plus one additional quart when you also change the oil filter. Vehicle #2 requires five quarts per change plus one quart whenever the filter is changed. Each year your family drives vehicle #1 about 16,000 miles and vehicle #2 about 24,000 miles. You change the oil filter every other time the oil is changed. The normal price for oil is $22.49 per case. Oil filters cost $4.39 each. How many total quarts will be used by vehicle #2 in one year?
Fill in the blank(s) with the appropriate word(s).
Which one of the following statements about JFETs is not true?
A) Maximum channel current flows when the source-gate voltage is zero. B) The p-n junction of a JFET must be reversed-biased for normal operation. C) A JFET is a voltage-controlled device. D) The gate and channel materials must be the same type materials.