How much heat is removed from body
The heat of vaporization of water is 40.66 kJ/mol. Assuming sweat is 100% water, how much heat is removed from your body through the evaporation of 1.86 g of sweat?
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Traffic engineers install 9 street lights with new bulbs. The probability that a bulb will fail within 50040 hours of operation is 0.23. Assume that each of the bulbs fails independently.
How does the average mass for a sphere in this sample compare with the average mass of the sample that consisted just of the blue spheres? How can such different samples have their averages turn out the way they did?
A small box is sliding along a frictionless horizontal surface when it comes to a a circular ramp which meets the horizontal surface tangentially. Determine the initial speed of the box.
What is the probability that the flight departs with empty seats? What are the mean and (d) standard deviation of the number of passengers who show up?
What is the new pH of the solution after 6.50g solid sodium hydroxide is added to 1.00L of the solution and dissolved. (Assume there is no appreciable volume change with the addition of the solid.)
Determine the power produced by a simple sprinkler-like turbine that rotates in a horizontal plane at 500 rpm. The radius of the turbine is 0.5 m.
A 76 cm diameter loop is rotated in a uniform electric field until the position of maximum electric flux is found. The flux in this position is measured to be 3.12 × 105 N · m2/C. What is the electric field strength?
What is the strongest base that may exist in water? What happens to stronger bases? (Use methoxide, CH3O1-, as an example.)
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