Question 21 (2 points) If we increase the thickness of insulation of a circular rod, heat loss to surrounding due to Convection and conduction increases Convection and conduction decrease Convection decreases while that due conduction increases Convection increases while that due conduction decreases Question 22 (1 point) Radiant barriers are highly reflective materials that minimize the radiation heat transfer between surfaces True False

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Beam loaded as shown in Fig. below. Determine the Following: Reaction support at point B. a. 56KN (Downward Direction) b. 56KN (Upward Direction) c. 35KN (Downward Direction) d. 35KN (Upward Direction)   Reaction support at point D. a. 26 KN (Downward Direction) b. 26 KN (Upward Direction) c. 24KN (Downward Direction) d. 24KN (Upward Direction)   Shear force equation of section AB. a. -30KN b. 30KN c. -32KN d. 32KN   Shear force equation of  section CD. a. -24KN b. 24KN c. -28KN d. 28KN   Bending moment equation of section BC. a. 26KN(x)+56KN.m b. 26KN(x)-56KN.m c. -26KN(x)+56KN.m d. None of the above.   Maximum bending moment of the beam. a. 47KN.m b. 46KN.m c. 48KN.m d. None of the above

Power is supplied at the rate of 0.40 hp for 2 min in drilling a hole in a 1.0 lb brass block. (a) How much heat is generated? (b) What is the rise in temperature of the brass if 75% of the heat generated warms the brass? What happens to the other 25%? (don't change the hp, lb)