Answer:h=7.22 m
Explanation:
Given
mass of firefighter 
Frictional Force 
average speed at bottom 
Let h be the height of Pole
net force on Firefighter is

therefore net acceleration is

using 
here 




Answer:
6.384 m/
Explanation:
The velocity is given by;
We know;
PE= mgh
KE= 1/2 m
but KE=PE
==> 1/2 m
=mgh
==> 1/2
=gh
==> 
puting g=9.8 m/sec2
h=2.08 m
==>
=
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Answer:
Final temperature is located between 5 °C and 20 °C.
Explanation:
The object with high temperature transfers energy to the object with low temperature until thermal equilibrium is reached, that is, when both objects have the same temperature.





Now, let consider three scenarios:
Scenario 1 - ![C_{H} = C_{L]](https://tex.z-dn.net/?f=C_%7BH%7D%20%3D%20C_%7BL%5D)

Scenario 2 - 

Scenario 3 - 

Final temperature is located between 5 °C and 20 °C.
The number and units. An example would be 3cm or 4kg.