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In a bad dream, you are naked in outer space. You only emit radiation, as there is little or none to absorb from your environment. Your skin acts like a blackbody at the infrared wavelengths that it radiates, and your body's surface area is about 2 m2. Estimate the following:
(a) the temperature and area of your skin,
(b) the rate at which energy is emitted by your body,
(c) the kilocalories of energy (1 kcal=1 food Calorie) emitted by your skin per day,
(d) the number of milkshakes (each containing about 400 kcal of energy) that you would have to drink per day in order to compensate for the energy lost from your skin.
(e) Why do you suppose it is biologically advantageous for the blood vessels in your skin to constrict when your environment is cold?
a certain solar-energy collector produces a maximum temperature of 100ordmc. the energy is used in a cyclic heat engine
a coating that is known to behave as a bingham plastic is being applied to a vertical surface. derive a relationship
Specify a combination of a multilevel signaling scheme and a Reed- Solomon code that will give a good performance on this channel. What is the data rate?
suppose that 100 lmin are drawn from a fermentation tank and passed through an extraction tank in which the
Name products that are manufactured using these processes and write two sentences on why you know it's made from this process.
This problem involves determining the frequency of vortex shedding from a circular cylinder as water flows past it. To proceed with this problem, go to WileyPLUS or the book's web site, www.wiley.com/college/munson.
An element in plane stress is subjected to stresses σx= - 8400 psi, σy= 1100 psi, and τxy= -1700 psi (see figure). The material is aluminum with modulus of elasticity E= 10,000 ksi and Poisson's ratio 0.33.
Determine the axial stress and strain of the axially loaded nail plate. How much does the nail plate shorten as a result of this axial response?
an ideal gas cp5.1926 kjkgk cv3.1156 kjkgk is placed in a piston-cylinder apparatus. the mass of helium is 5kg and the
14 kgs of liquid water enters a pump at a velocity of 1 ms and at 1 atm pressure. it leaves the pump at a velocity of
a simple pulley with the given radius r used to lift heavy objects is positioned 10 feet above ground level. Given that the pulley rotates theta degrees, determine the height to which the pulley is lifted.
how many boxes can be placed on the raft if the books are to remain dry? Assume that the water remains calm.
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