Discovery of the Powell Field, also near Corsicana, followed in 1900. Jan. 10, 1901, is the most famous date in Texas petroleum history. This is the date that the great gusher erupted in the oil well being drilled at Spindletop, near Beaumont, by a mining engineer, Capt. A. F.
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Answer:
John is participating in scaling; Jane is participating in a detection experiment question.
Explanation:
The experiment in which John is participating relates to the scaling question and the experiment in which Jane is participating relates to the detection question.
Scaling questions is a method used to construct understandings in order to assess a variable, situation, concern, relationship etc, it involved participant by asking them to perceive, described a variable based on a continuum i.e to rate, grade, usually based a scale of preference. John in the experiment was asked to determine how much brighter light has to be which is based on how he perceives the magnitude of the original light, the researcher is simply asking John to scale the light magnitude.
Detection questions are usually in an interrogative form used to exploring and searching for quality information; a technique that estimates detectability of the observer to accurately detect stimuli or a situation. Jane participating in an experiment was asked to determine how strong an odor has to be before she initially perceives the odor.
Answer:
if you take a positive number and subtract a negative number it can be both
Explanation:
When subtracting a number from a positive number if you subtract more from that number then the number your taking stuff away from then its negative but if for instance you do this 5-4=1 you would get a positive number
so basically remeber these examples
5 - 4 = 1
2 - 3 = -1
