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A student does 1.6 104J of work. In the process, his internal energy decreases by 4.23 104 J. Determine a) W b) DU c) Q
Americans ate an average of 25.7 pounds of confectionery products each last year and
spent an average of $61.50 per person doing so. If the standard deviation of consumption is 3.75 pounds and the standard deviation of the amount spent is %5.89, find the following:
a. The probability that the sample mean confectionary consumption for a random sample
of 40 American consumers was greater than 27 pounds.
b. The probability that for a random sample of 50, the sample mean for confectionary
spending exceeded $60.00
The average per capita spending on health care in United States is $5274. If the standard
deviation is $600 and the distribution of health care spending is approximately normal, what is the probability that a randomly selected person spends more than $6000? Find the limits of the middle 50% of individual health care expenditures.
Balance the redox reaction using the steps on the oxidation state method(10 pts)
HNO² + HI -> NO + I² + H²O
At 88 meters high a rock is thrown horizontally from the top of a cliff, with a horizontal speed of 25 m/s. Now, what's the direction of velocity and with what velocity does the rock hit the ground?
What is the horizontal force needed to accelerate a 42 kg grocery cart from rest to a velocity of 0.80 m s in 1.75 s
What is the horizontal force needed to accelerate a 42 grocery cart from rest to a velocity of 0.80 m/s in 1.75s
Determine the ΔS system given the reaction :
C6H12O6 (s) + O2(g) --------------→ CO2 (g) + H2O(l)
a company produces mosquito repellents that have a period of effectiveness that is approximately normally distributed with a mean of 300 hours and a standard deviation of 30 hours. A sample of 40 repellents was taken and the average period of effectiveness is computed as 290 hours. Test the hypothesis that µ = 300 against the alternative that µ ≠ 300
Explain causes of monopoly
#340153 on Dec 2023