What term describes a consistent natural phenomenon for which there is an incomplete scientific explanation?
a. scientific theory
b. law of nature
c. hypothesis
d. scientific law
e. scientific method
b
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An RC circuit is connected across a DC voltage source through an open switch. The switch is closed at t = 0 s. Which of the following is a correct statement regarding this circuit?
A) The charge on the capacitor after four time constants is about 98% of the maximum value. B) The charge on the capacitor after one time constant is about 25% of its maximum value. C) The charge on the capacitor after one time constant is about 50% of its maximum value. D) The voltage on the capacitor after two time constants is about 14% of the maximum value. E) The voltage on this capacitor after two time constants is about 100% of its maximum value.
Which of the following is NOT a vector?
A. Acceleration B. Velocity C. Mass D. Weight E. All of these choices are correct
How can a white dwarf be hotter than our Sun, yet much less luminous?
What will be an ideal response?
Determine the approximate value for the convective heat transfer coefficient for normal butane boiling with a superheat temperature of 10ºF by using Equation 10-56. The saturation temperature of normal butane is 2430F at atmospheric pressure.
