An air-standard otto cycle has a compression ratio of 8 and temperature and pressure at the beginning of the compression process are 560°r and 14.7 lbf/in2 respectively. the heat addition per unit mass of air is 400 btu/lb. determine the (a) maximum temperature, in 'r (b) maximum pressure, in lbfin (c) heat rejected, in btu/lb (d) thermal efficiency 10 pts] [10 pts] 10 pts 10 pts) solve the problem using the cold-air standard assumption using cv 0.172 btu/lb. r and k 14

An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?