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Question: 15 please...

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# 15 please
29 Review Problems for Chapter 1 with h 3.0 min to approximate the temperature of the body after that of the environment; this is known as Newtons law of cooling. However, heat transfer also occurs due to ther- mal radiation, which according to Stefans law of radi- ation is governed by the difference of the fourth powers of these temperatures. In most cases one of these modes dominates the other. Problems 15 and 16 invite you to simulate each mode numerically for a given set of initial (a) 30 minutes. (b) 60 minutes. 6. Stefans Law of Radiation. Stefans law of radiation states that the rate of change in temperature of a body at T(t) kelvins in a medium at M(:) kelvins is proportional to M-T. That is, conditions 15, Newtons Law of Cooling. Newtons law of cooling states that the rate of change in the temperature T(t) of a body is proportional to the difference between the tem- perature of the medium M(t) and the temperature of the = K(M(r)4-7(t)) , where K is a constant. Let K = 2.9×100 (min)-1 and assume that the medium temperature is constant, M(r) 293 kelvins. If T(0) 360 kelvins, use Eulers method with h 3.0 min to approximate the temperature of the body after (a) 30 minutes. (b) 60 minutes. body. That is, dT where K is a constant. Let K 0.04 (min)-1 and the tem- perature of the medium be constant, M() 293 kelvins. If the body is initially at 360 kelvins, use Eulers method Chapter 1 Summary basic terminology for differential equations. The order of a differential equation is the order of the highest derivative present. The subject of this text is In this chapter we introduced some rdinary differential equations, which involve derivatives with resnect to
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