Which statement would most likely explain why the results of one new experiment did not support an accepted hypothesis?
a. there was a flaw in the experiment’s design or errors when it was conducted.
b. two different theories about the subject are both true at the same time.
c. the hypothesis was false, and scientists should replace it with a new one.
d. the question that originally inspired the hypothesis was not fit for scientific inquiry.
Answers: 3
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The ratio of lift to drag l/d for a wing or airfoil is an important aerodynamic parameter, indeed, it is a direct measure of the aerodynamic efficiency of the wing. if a wing is pitched through a range of angle of attack, l/d first increases, then goes through a maximum, and then decreases. consider an infinite wing with an naca 2412 airfoil. estimate the maximum value of l/d. assume that the reynolds number is 9x10^6.
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Arefrigerator uses r-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 34 percent and leaves the compressor at 70°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator. (0.00644 kg/s, 800 kpa, 2.03)
Answers: 1
Which statement would most likely explain why the results of one new experiment did not support an a...
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