With what speed does balloon hit the ground
A hot-air balloon is ascending at the rate of 14 m/s and is 96 m above the ground when a package is dropped over the side. (a) How long does the package take to reach the ground? (b) With what speed does it hit the ground?
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Note that all three data sets have a median of 50. Notice how spread out the points are in each data set and compare this to the standard deviations for the data sets. Describe the relationship you see between the amount of spread and the size of
The radioactive isotope tritium decays with a first-order rate constant k of 0.056 year^-1. What fraction of the tritium initially in a sample is still present 30 years later?
Two waves traveling in opposite directions along a string fixed at both ends create a standing wave described by y(x, t) = 0.01 sin(58x)cos(1210t). The string has a linear mass density of 0.01 kg/m, and the tension in the string is supplied by a m
Assuming that the combustion reaction is controlled by the diffusion of oxygen to the coal particle surface, estimate the instantaneous combustion rate of oxygen (mol/s) by the average size coal particle.
The mean amount purchased by a typical customer at Churchill's Grocery Store is $23.50 with a standard deviation of $5.00. Assume the distribution of amounts purchased follows the normal distribution. For a sample of 50 customers, answer the follo
Determine the final pressure and temperature of the mixture and the entropy change for the mixing process. Assume constant specific heats where cvN2 = 0.744 kJ/(kg-K); cv Co2 = 0.68 kJ/(kg-K).
If [FeF6]3- is a high spin complex and[Fe(CN)6]3- is a low spin complex, how many unpaired electrons are present in the two complex ions respectively?
The human eye is most sensitive to light having a frequency of about 5.5 x 1014 Hz, which is in the yellow-green region of the electromagnetic spectrum. How many wavelengths of this light can fit across a distance of 2.5 cm?
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Review section 2.2 about the various research methods used by sociologists, then address the following questions.
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