Which of the following aging treatments of a precipitation-hardened alloy would be expected to result in the most stable precipitate particles?
(a) As-quenched
(b) Under-aged
(c) Aged to peak strength
(d) Over-aged
(d) Over-aged
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Motional Emf: A conducting rod whose length is ? = 25 cm is placed on a U-shaped metal wire that is connected to a lightbulb having a resistance of 8.0 ? as shown in the figure. The wire and the rod are in the plane of the page. A constant uniform magnetic field of strength 0.40 T is applied perpendicular to and out of the paper. An external applied force moves the rod to the left with a constant speed of 12 m/s. What are the magnitude and direction of the induced current in the circuit?
A. 150 mA clockwise B. 150 mA counterclockwise C. 34 mA counterclockwise D. 34 mA clockwise E. 100 mA clockwise
Which three played a role in the finding of Neptune?
A) Herschel, Hubble, and Einstein B) Adams, Leverrier, and Galle C) Shapley, Hubble, and Whipple D) Bode, Herschel, and Fraunhofer E) Newton, Einstein, and Tombaugh
The "back emf" of a motor refers to a source of voltage that
a. occurs when the motor runs backwards. b. occurs when the motor is used as a generator. c. is biggest when the current through the motor is biggest. d. is biggest when the motor turns fastest.
What evidence can you find that GCMs are getting better? For example, could the change in the IPCC prediction from 3.0 ± 1.5 °C to 1.4 °C to 5.8 °C be considered an improvement? Explain
What will be an ideal response?