Imagine 2 birds leave the same tree at the same time. They both fly at 10mph for 5 min, and 12 mph for 8 min, and 5 mph for 10 m
1 answer:
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Answer:
Part a)
ZERO
Part b)
N = 10 turns
Explanation:
Part a)
As we know that transformer is used to change the input voltage into required output voltage
Here this input and output is considered only when it will change with time as the whole concept is based upon Faraday's law where we need to change the flux with time.
So if we have input Source is DC source then output voltage will be zero as there is no flux change
Part b)
As we know by the principle of transformer
so total number of turns in secondary coil must be 10
Answer:
The thermal power emitted by the body is
The net power radiated is
Explanation:
From the question we are told that
The length of the assumed human body is L = 2.0 m
The circumference of the assumed human body is
The Stefan-Boltzmann constant is
The temperature of skin
The temperature of the room is
The emissivity is e=0.6
The thermal power radiated by the body is mathematically represented as
substituting value
The net power radiated by the body is mathematically evaluated as
Where A is the surface area of the body which is mathematically evaluated as
substituting values
=>
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