76. Calculate the amount of heat required to raise the tem- perature of a 22-g sample of water from 7 °C to 18 °C. 78. Calculate the amount of heat required to heat a 3.5-kg gold bar from 21 °C to 67 °C. 80. If 57 J of heat are added to an aluminum can with a mass of 17.1 g, what is its temperature change? 82. A 45-kg sample of water absorbs 345 kJ of heat. If the water was initially at 22.1 °C, what is its final temperature?

* Your answer is incorrect. A piston-cylinder assembly contains 0.7 lb of propane. The propane expands from an initial state where p₁ = 60 lbf/in.² and T₁ = 70°F to a final state where p₂ = 10 lbf/in.² During the process, the pressure and specific volume are related by pv² = constant. Determine the energy transfer by work, in Btu. W = i 3.123 Btu

Each of the following statements describes a way of coping with temperature variation. Which scenario most likely includes positive heat transfer through convection? That is, in which scenario does Hconvection most likely have a positive (+) sign? Hanimal = +SR + IRin – IRout +/- Hconvection +/- Hconduction - Hevaporation + Hmetabolic Select one: a. A rabbit basking in the sun early in the morning. b. A lizard resting in the shade in a hot desert in the middle of the day. c. A bumblebee vibrating its flight muscles before flight. d. A ground squirrel hibernating in the winter. e. A bird fluffing its feathers on a cold day.

VO2 (mL. kg. min ¹)-(0.1. S)+(1.8. S. G) 3.5 VO2 (mL. kg¹. min ¹1)-(0.2.5) + (0.9. S. G) 3.5 VO2 (ml. kg¹. min¹)-((10.8. watts)/BM)+7 Where S-velocity (m.min) G-gradient (expressed as a decimal, so 5% -0.05) During working maintain 4 d.p. Round answer to whole numbers. During working maintain 4 d.p. Round answer to whole numbers. What is the caloric expenditure for a 90kg client who cycles at 250W for 10 minutes? O a. 167 k.cal O b. 160 k.cal O c. 37 k.cal O d.67 k.cal O e. 173 k.cal Hand written plz