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Two capacitors, one 12.0 μf and the other of unknown capacitance, are connected in paralel across a battery of EMF 9.0V. The total enery stored in the two capacitors is 0.0115 J.
A) What is the unknown capacitance, C?
B) What is the total charge stored on the two capacitors?
A certain single ion channel is selectively permeable to K and has a resistance of 1.15 GOhms. How many K ions travel through the channel during this time
Gold, which has a density of 19.32 g/cm3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. (a) If a sample of gold with a mass of 7.948 g, is pressed into a leaf of 1.547 m thickness.
A single constant force F = (3.32i + 4.99j) N acts on a 3.37 kg particle. What is the change in the potential energy of the system
A rotating fan completes 1200 revolutions every minute. Consider the tip of a blade, at a radius of 0.11 m. Through what distance does the tip move in one revolution? What is the tip's speed
Suspend an ideal spring vertically from a ceiling and attach an object to the other end and then slowly lower the object until the upward force exerted by the spring on the object balances the weight of the object.
A weather balloon filled with helium gas has a volume of 279 m3, What is the new volume of the balloon
A luggage carousel has the form of a large cone. Its surface slopes at 20o with the horizontal. Compute the force of static friction between bag and carousel
two point charges -2q and 3q are on the x-axis -2q at the origin and 3q at x d. choose the potential to equal zero at
If the height of the candies in the container increases at the rate of 0.29cm/s, at what rate (kilograms per minute) does the mass of the candies in container increase.
In astronomy, distances are often expressed in light-years. One light-year is the distance traveled by light in one year
A thundercloud similar to the one described in Example 24.3 produces a lightning bolt that strikes a radio tower. find the effective resistance of the air during the lightning strike
A pilot claims to have seen a UFO moving initially at a speed of about 484 m/s in an easterly direction, Compute the UFO's average acceleration during the turn
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