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In this problem you will consider the balance of thermal energy radiated and absorbed by a person. Assume that the person is wearing only a skimpy bathing suit of negligible area. As a rough approximation, the area of a human body may be considered to be that of the sides of a cylinder of length L=2.0 m and circumference C= 0.8 m. For the Stefan-Boltzmann constant use 5.67*10^-8 W/m^2/K^4 . A) If the surface temperature of the skin is taken to be Tbody= 30 degrees C, how much thermal power Prb does the body described in the introduction radiate? Take the emissivity to be e=0.6 . Express the power radiated into the room by the body numerically, rounded to the nearest 10 W. B) Find Pnet, the net power radiated by the person when in a room with temperature Troom=20degrees C . Express the net radiated power numerically, to the nearest 10 W.
You are studying the genomes of an herb with red flowers that grows in a large field. You sequence the genomes of over one hundred individual herb plants in the field and count their chromosomes. You find that most of the individual plants have 30 chromosomes. However, about 10% of individuals have 60 chromosomes. You investigate further and discover that this increase in the number of chromosomes is due to an error in cell division that results in gametes with twice the number of chromosomes. You publish your findings, are awarded the Nobel Prize, and live happily ever after. What is the name of the process that produces the individuals with 60 chromosomes in this example? Post-zygotic isolation Pre-zygotic isolation Autoploidy
Question 4 / Vraag 4 Determine the maximum shear stress acting at section a-a. Also, determine the shear stress at point B and draw the shear stress distribution over the cross section of the member. Bereken die maksimum skuifspanning wat by snit a-a inwerk. Bereken ook die skuifspanning by punt B en teken die skuifspanning verspreiding oor die deursnit van die element. 2 kN 4 kN 250 mm 250 mm 300 mm a a 20 mm 70 mm B 20 mm 50 mm
Which of the following are considered good plants to substitute meat with for their protein value? 1. Broccoli, Quinoa, hemp seeds, lentils 2. Broccoli, Quinoa, eggs, hemp seeds 3. Quinoa, hemp seeds, lentils, spinach
When suctioning a client tracheostomy or laryngectomy tube, the nurse should follow which of the following procedures? Question 29Answer Cleanse the catheter in sterile water after each use for 8 hours Use a sterile catheter each time the client is suctioned Soak it to antiseptic after its used. Protect the catheter in sterile packaging between suctioning, and disinfect in peroxide between uses.
8. What are the associated costs, including property acquisition, maintenance, and potential fluctuations in mortgage rates?
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I. Write an equation for entropy change of internally reversible process of closed system II. Internally Reversible Adiabatic process means process III. Gibbs equations T.ds = \frac{-udP}{\_} = du + pdv. IV. Units for total entropy English Engineering V. Write an equation for entropy change goes through. complete latent heat of vaporization VI. Write an equation for entropy change of an idealgas
1. A 2.3 kg object is acted upon by a 0.03 kg m/s impulse for 0.01 s. The force acting upon it is: a) 22.5 N b) 76.6 N c) 0.0003 N d) 3 N e) 230 N 2. Perfectly inelastic, elastic, and perfectly elastic collisions have the following in common: a) Kinetic energy is totally conserved. b) Momentum is totally conserved. c) Both kinetic energy and momentum are totally conserved. d) Neither kinetic energy nor momentum is totally conserved. 3. An example of kinetic energy is: a) A compressed spring. b) A rock at the top of a cliff. c) A tornado. d) A gallon of gasoline. e) An automobile storage battery. 4. An example of potential energy is: a) A tornado. b) A compressed spring. c) A car traveling 65mph. d) A bullet passing through a piece of wood. 5. An apple falls from a tree. Compare its kinetic energy, K, to its potential energy, U. a) K increases and U decreases. b) K decreases and U decreases. c) K increases and U increases. d) K decreases and U increases.
3.2 kN CO 300 mm E B D A 75 mm 400 mm 400 mm