Mars is 141,600,000 miles from the Sun
The mass is 639E21 kg
One day length is 24 hours and 40 minutes
The radius is 2,106 miles
And has 2 moons, Phobos and Deimos
(b) 71%
The thermal efficiency of a Carnot heat engine is given by:

where
W is the useful work done by the engine
is the heat in input to the machine
In this problem, we have:
is the heat absorbed
is the work done (175 kJ is the heat released to the sink, therefore the work done is equal to the difference between the heat in input and the heat released)
So, the efficiency is

(a) 
The efficiency of an engine can also be rewritten as

where
is the absolute temperature of the cold sink
is the temperature of the source
In this problem, the temperature of the sink is

So we can re-arrange the equation to find the temperature of the source:

(36 feet) x (1 meter / 3.28084 feet) = 10.973 meters (rounded)
Answer:
(a) warm air is forced upward where it cools;
(c) cumulonimbus or nimbo-stratus clouds form
(d) thunderstorms with heavy showers and gusty winds occur"
(b) air cools and sinks, pressure rises, rain stops;
Explanation:
- A cold for front is a denser air , as that forms under the warmer and lighter air mass and this causes a low pressure along the cold form and thus causes the formation of a thunderstorm where enough moisture is present and drop in temperature occurs and in the northern hemisphere the cold front shifts the winds to from the southwest to northwest clockwise.
Explanation:
Below is an attachment containing the solution.