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Three unknown resistors are in a bin; let's call them red, green, and blue. When a Physicist connects the three resistors in series to a 30 volt source she measures 1A of current. When she connects all three in parallel to the same 30V source, she measures 11A of current. If she connects only the red and the green resistors in series to the same source, she gets the same amount of current as when only the blue resistor is connected to the source. If we assume that the blue resistor is 3 times the red resistor in resistance, when she connects just the green resistor in series to a 1 microfarad capacitor, what is the charging time constant?
The temperature of 1.5 kg of ethanol is 37c. What would the final temperature be if 80 000J of energy as heat is added to the ethanol.
Two very large charged parallel metal plates are 10.0cm apart, How much work has the electric field done on this proton by the time it reaches the positive plate
In a series RCL circuit the generator is set to a frequency that is not the resonant frequency. What is the frequency of the generator
There is a +10 nC charge inside a cube of size 5 cm. What additional charge must be placed into the cube
A point charge Q is located at the center of a very thin, spherical metal shell. what is the electric potential of the shell
A large punch bowl holds 3.80kg of lemonade (which is essentially water) at 20.0?C. A 5.10×10?2-kg ice cube at -10.0?C is placed in the lemonade. What is the final temperature of the system
You have a lens whose focal length is 12.7 cm. You place an object on the axis of the lens at a distance of 6.25 cm from it. How far is the object\'s image from the lens
The sound intensity 44 m from a wailing tornado siren is 0.10 W/m2 -. Estimate the maximum distance at which the siren can be heard
A proton enters a uniform 0.2T magnetic field at right angles. What is the frequency of the proton's subsequent circular orbit
The transmission axis of the analyzer makes an angle of 32.0° with the axis of the polarizer. What fraction of the original light is absorbed by the analyzer
You are on a boat in a fog and know there are cliffs ahead of you somewhere, but you cannot see them. How far away are the cliffs
The total kinetic energy in one mole of nitrogen is 4,000 J. what is the root mean-square velocity of an individual particle in the ideal gas
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