What is the atom density of hydrogen in the concrete
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?
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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 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?
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?
A uniform, upward-riected electrical field exist in teh region between the plates, and the field exerts an electic force down on the electon. Describe the movement of the electron in the region.
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