Exactly one non-defective
A lot contains 15 items and 6 are defective. If two items are drawn at random from the lot, without replacement, what is the probability there is exactly one non-defective?
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An aluminum cup contains 225g of water and at 27 C. a 400-g sample of silver at an initial temperature of 87 C is placed in the water. a 40g copper stirre is used to stir the mixture until it reaches its final equlilbrium temperature of 32 C. Calc
The following frequency table summarizes the ages of 65 shoppers at the local grocery store. Calculate the sample variance and standard deviation for this data set. (Hint: First calculate class mid-points and the Mean for the grouped data)
The fuel has a mass density of 19.2 g/cm^3. (a) What is the mass of 235 U in the reactor? (b) What are the atom densities of 235 U and 238 U in the fuel?
Two capacitors each have a capacitance C, and a third capacitor has a capacitance C/2. If the first two are connected in series, and the series configuration is connected in parallel to the third, how does the final arrangement compare to C?
A concrete with a density of 2.35 g/cm^3 has a hydrogen content of 0.0085 weight fraction. What is the atom density of hydrogen in the concrete?
How much heat would be required to warm earths oceans by 1.0 degrees C? the volume of the earths oceans is 137 x 10 to the 7th power and km to the 3rd power.. the density is 1.03g/cm to the 3rd power.
The earth has a radius of about 6.35*10^6 m and a mass of 5.98*10^24 kg. What would be the radius if the earth has the same mass density as matter in a nucleus?
How fast would she have been traveling if yellow light of wavelength 576 nm had been shifted to green with a wavelength of 554 nm?
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