Answer Happy

PHYSICS 115 SPECIAL HOMEWORK #9 (HEAT) 91. Convert the following to "Cand to K: 84"F, 108*F, 32"F, 68°F, 45°F and 49" 92. Convert the following to "Fand to K: -34,6°C, 100°C, 10°C, 97°C and 325°C 93. Convert the following to 'F and to "C: 303 K, 25K, 123K, 270 K, and 385 K. 94. A 20 kg of block of metal absorbs Skd of heat, when the temperature changes from 20.0°C to 30.0°C. Calculate the specific capacity of the metal, 95, 1420) of thermal energy are to 100.0 g block at -20.0°C. What final temperature will Carbon reach? The specific heat capacity of Carbon = 710 J/kg.K 96. How much heat does 0.25 kg of aluminum give off as it cools 100.0°C to 20.0'C. CAL = 880J/kg.K 97. Two identical metal plates have different temperatures. One is 20.0"C and the other is 90.0°C. They are placed in good thermal contact. What is heir final temperature? 55.0°C] 98. A thermos bottle contains 150 g of water at 4.0°C. Into this is placed 90 g of metal at 100.0°C. After equilibriurn the temperature of water is 21. What is the specific heat capacity of the of the metal? Assume no heat loss to the thermos bottle? 99. A thermos bottle contains 250 g of coffee at 90.0°C. To this is added 20 g of milk at 5'C. What the temperature of the mixture? Assume no heat loss to the thermos bottle. [84*C] 100 How much heat is transferred to 5 kg of ice at -10°C to steam at 110°C. Cice = 2050 J/kg.k; H = 3.3 x10 /kg: CWATER = 42001/kg.k; Hy = 2.26 x 10 J/kg and Cream = 1865 J/kg.K 101. A 50 kg piece of metal at 95C is dropped into a 250 g of water at 17.0°C and warms it to 19.4°C. What is the specific heat capacity of the metal? 102. What is the final temperature of 50 g of water at O'C added to 250 g of water at 90.0°C