An electric toaster operating on 120 volts draws a current of 6 amperes. The resistance of the toaster is
a. 0.05 ohms. b. 20 ohms.
c. 720 ohms. d. none of the above.
b
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For a fixed control volume, the reason why the equation below is:
(A) The integrand is independent of time
(B) The limits of integration are independent of time
(C) The flow is a steady flow
(D) The quantity ?? is independent of position
What is the size of the largest asteroid?
A) 1 km B) 10 km C) 100 km D) 1,000 km E) 10,000 km
The small circles in the diagram below represent the positions along the x axis of a body at equal time intervals. Assume the body moves in a straight line.
This diagram is most likely to describe
A. a swimmer swimming laps. B. an exercise on a rowing machine. C. a person on a treadmill. D. a tennis ball during a volley. E. a runner who tripped, fell, rose, and continued racing.
The electrical conductivity of a metal is not proportional to which of the following?
(a) Free-electron density (b) Electron mobility (c) Electron charge (d) Atomic number