You are going on a car trip with your family
across the United States. To your brother's
surp...
Physics, 10.05.2021 18:30 philliple481
You are going on a car trip with your family
across the United States. To your brother's
surprise, the AM radio station that your family
is listening to is coming from a city 600 miles
away. Explain to him how this is possible. Be
sure to describe how the ionosphere affects AM
radio transmissions.โ
Answers: 2
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An air standard cycle with variable specific heats is executed in a closed system and is composed of the following four processes. 1-2 isentropic compression 100 kpa and 22ยฐc to 600 kpa 2-3 v=constant heat addition to 1500 k 3-4 isentropic expansion to 100 kpa 4-1 p=constant heat rejection to initial state (a) show the cycle on p-v and t-s s (b) calculate the net work output per unit mass (409 kj/kg) (c) determine the thermal efficiency (47.9%)
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