Obtain the dielectric constant
A parallel plate capacitor has a capacitance of 7uF when filled with a dialectric. The area of each plate is 1.5 square meters and the separtion between the plates is 1X10^-5m. What is the dielectric constant?
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In a small town there are only two AM radio stations, one at 930 kHz and one at 1280 kHz. What is the wavelength of the radio wave transmitted by the first station?
The population mean for Verbal IQ scores is 100, with a standard deviation of 15. Suppose a researcher takes 50 random samples, with 30 people in each sample.
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Assuming a normal population distribution with a mean of 125 and a standard deviation of 25, what is the probability of obtaining the following means for groups of subjects chosen by random sampling?
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A sample natural gas at STP is 78% CH4 and 22% C2H6 by volume. How many moles of each gas are present in 1.20L of the mixture? Assume ideal gas behavior.
A heat-engine of 32% thermal efficiency is used to drive a refrigerator having coefficient of performance of 5. Determine the heat input into the engine for each MJ removed from the refrigerated space by the refrigerator.
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