Assume 8 lb of a substance receive 240 Btu of heat at constant volume and undergo a temperature change of 150oF. Determine the average specific heat of the substance during the process. a) 0.5 Btu/lboF                                                                                  c)0.40 Btu/lboF b) 0.3 Btu/lboF                                                                                   d)0.20 Btu/lboF

15. The weight W of object varies inversely as the square of the distance d from the center of the earth. At sea level (3978 mi from the center of the earth), an astronaut weighs 220 lb. Find his weight when he is 2000 miles above the surface of the earth. A) 97.4 lbs B) 75.2 lbs C) 109.5 lbs D) 87.33 lbs

Which of the following is the rate of heat transfer unit?a) Wattb) Pascalc) Jouled) Newton

14 - Carbon dioxide gas enters a pipe with a flow rate of 2.19 kg/s at a pressure of 3.7 MPa and cools at a constant pressure as it travels through the pipe, reaching a temperature of 440 K at the outlet. Which of the following is the volumetric flow rate at the outlet when carbon dioxide gas is considered an ideal gas?    a) 0.02246 m³ /kg  B) 3,47877 m³ /kg  NS) 1,37868 m³ /kg  D) 0.0492 m³ /kg  TO) 0.01026 m³ /kg