Answer:
So No of slices to be consumed by each person = n = 65
Explanation:
Energy released by one slice = E1
[tex]E1=10^6\ J[/tex]
h = 8850 m ; m = 79 kg ,η= 10.5%
We know that potential energy given as
u = m g h
u = 79 x 9.81 x 8850
[tex]u=6.8\times 10^6\ J[/tex]
we know from the defination of efficiency that, η= E(out)/E(in)
Now amount of PE has to be compensated, In our case, E(out) =u
[tex]0.105=\dfrac{E(out)}{E(in)}[/tex]
[tex]0.105=\dfrac{6.8\times 10^6}{E(in)}[/tex]
[tex]E(in)=64.76\times 10^6\ J[/tex]
Let n be the number of bread slices to be consumed.
n = E(in)/E1
[tex]n=\dfrac{64.76\times 10^6}{10^6}[/tex]
n=64.76
So No of slices to be consumed by each person = n = 65
