If it takes 10 seconds for a car to reach its top speed of 100 miles per hour, its acceleration would be. Help please
1 answer:
Answer:
or
Explanation:
Acceleration is rate of change of speed per unit time. The change in speed is given by deducting the initial speed from final speed. Assuming that the car starts from rest to a top speed of 100 miles per hour, then the change in speed is equivalent to 100-0=100 miles per hour.
Time is given in seconds and converting to hours will be 10/3600
The acceleration will then be
Alternatively, the change in speed xould be converted to miles per second hence 100/3600 miles per second divided by 10 s then rounded off as
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Answer:
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Explanation:
Using the formula that relate heat and work from the thermodynamic theory as: solving to Q_out we get:
this is the heat out of the cycle or engine, so it will be heat transfer to the environment. The thermal efficiency of a Carnot cycle gives us:
where T_Low is the lowest cycle temperature and T_High the highest, we need to remember that a Carnot cycle depends only on the absolute temperatures, if you remember the convertion of K=°C+273.15 so T_Low=150+273.15=423.15 K and T_High=450+273.15=723.15K and replacing the values in the equation we get: