Power: An electronic component with a 17-? resistor is rated for use at power levels not exceeding 14 W. How much current can safely flow through the component?
A. 0.91 A
B. 1.21 A
C. 238 A
D. 0.22 A
Answer: A
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Suppose that the electric force between two objects is 2 N and that you then double the distance between the objects. The new force is
A) 1 N. B) 0.25 N. C) 0.5 N. D) 4 N. E) 8 N.
A 16.2-g bullet with an initial speed of 850 m/s embeds itself in a 40.0-kg block, which is attached to a horizontal spring with a force constant of 1000 N/m. What is the maximum compression of the spring?
A) 6.34 cm B) 5.57 cm C) 3.42 cm D) 1.26 cm E) 6.88 cm
For natural or free convection in an enclosed space, heated from below and with adiabatic sides, Bénard cells form at Rayleigh number 1708. For air heated at 30ºC and having Prandtl number 0.710, what do you expect the height of the Bénard cells to be?
What will be an ideal response?
In the periodic table of elements, members of each ________ have similar chemical properties
A) period B) row C) group D) transition