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1. The resistance across your (wet) tongue, from one side to the other near the tip, is 375 ? (assume that your tongue is an ohmic material). If you connect two thick copper wires of relatively negligible resistance to the terminals of a 1.5 volt flashlight battery, and place them on opposite sides of your tongue, you will be able to "taste" the electricity as it flows across, producing a sour metallic flavor. What current is flowing through the saliva that coats your tongue?
As you drive by an AM radio station, you notice a sign saying that its antenna is 49 m high. what is the frequency of the station
The middle C string on a piano is under a tension of 944N. The period and wavelength of a wave on this string are 3.82 ms, calculate the linear density of the string
A 386 g object is attached to a spring andexecutes simple harmonic motion with a period of 0.240 s. If the total energy of the system is5.48 J. Find the maximum speed of the object
A certain heat engine does 8.5 kJ of work and dissipates 8.50 kJ of waste heat in a cyclical process. What was the heat input to this engine
Use gauss law to find the electric field in the space surrounding an infinite line of the charge with a uniform charge density
A 284-kg motorcycle is accelerating up along a ramp that is inclined 30.0º above the horizontal. Find the magnitude of the motorcycle's acceleration.
The potter can stop the wheel in 7.0 s by pressing a wet rag against the rim and exerting a radially inward force of 68 N. Find out the effective coefficient of kinetic friction between the wheel and the wet rag.
A wire is stretched between two posts. Another wire is stretched between two posts that are four times as far apart. The tension in the wires is the equal, and they have the same mass.
In a lab experiment, 7.75g of phosphorus reacts with bromine to form 67.68g of phosphorus tribromide, How many grams bromine reacted and how do you know
A parallel-plate capacitor has square plates 20 cm on a side and 0.50 cm apart. what is the displacement current in the capacitor
the speed at which the ball left the quarterback's hand.
Why is the normal force of an object zero at the top of a hill (such as the hill of a roller coaster)? I'm doing a circular motion unit and I found a few problems where this is the case, and I was wondering how it works.
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