Sofia goes on a hike on a trail that is 10 km long. She starts at 2:00pm and ends at 5:00pm. The end of the trail is 300m north
1 answer:
As the question depicts the trail is 10Km long but the end of the trail is 300m north from the beginning, Here the average velocity comes out to be 100m/hr.
<h3>What is Velocity?</h3>Velocity is defined as the displacement covered by an object or a body in unit time interval.
From the problem, it is clear that the distance is 10Km but the displacement comes out to be 300m.
The time from 2:00 pm to 5:00 pm is a total of 3hours.
Now, the velocity is determined from the following formula
here,
d= displacement
t= time
So, by putting values in above formula we get,
So, the average velocity of Sofia is 100m/hr
To Know more about velocity
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Answer:
The specific heat capacity is q_{L}=126.12kJ/kg
The efficiency of the temperature is n_{TH}=0.67
Explanation:
The p-v diagram illustration is in the attachment
T_{H} means high temperature
T_{L} means low temperature
The energy equation :
= R*
in(
/
)
The specific heat capacity:
=q_{h}*(T_{L}/T_{H})
q_{L}=378.36 * (400/1200)
q_{L}=378.36 * 0.333
q_{L}=126.12kJ/kg
The efficiency of the temperature will be:
=1 - (
/
)
n_{TH}=1-(400/1200)
n_{TH}=1-0.333
n_{TH}=0.67
