Capacitance is o A/d for
A) all capacitors.
B) parallel wires.
C) parallel plates.
D) concentric cylinders.
C
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Estimate the buoyant force of 1-mm-diameter water vapor bubbles in sea water at 100C. Sea water can be assumed to have a density 10% more than pure water, and the surface tension of water can be assumed to be 65 mN/m.
What will be an ideal response?
Which of the following types of galaxies are closest to being spherical in shape?
A) spirals B) ellipticals C) irregulars
An object of mass m with a certain initial speed on a horizontal surface comes to rest after traveling a distance of 9.0 m
If the coefficient of kinetic friction between the object and the horizontal surface is 0.20, what is the initial speed of the object? Use g = 10 m/s2. A) 9.8 m/s B) 6.0 m/s C) 3.6 m/s D) 7.2 m/s E) 8.9 m/s
Venus's crust is thicker than Earth's because
A. Venus has little internal activity, keeping the crust from melting. B. the high temperatures at the surface of Venus have baked the crust. C. volcanic eruptions continuously add more material to the surface. D. rocks on Venus melt at higher temperatures.