Answer:
The value is 
Explanation:
From the question we are told that
The current is 
The radius is 
The length of the wire is
\
The resistance is 
The outer surface temperature is 
The average thermal conductivity is 
Generally the heat generated in the stainless steel wire is mathematically represented as


=> 
=> 
Generally the middle temperature is mathematically represented as



One can simply find the frictional force acting on an object using this equation:
(Ffrict<span> = μ•F</span>norm<span>)
</span>
The process of determining the value of the individual forces acting upon an object involve an application of Newton's second law (Fnet=m•a) and an application of the meaning of the net force. If mass (m) and acceleration (a) are known, then the net force (Fnet) can be determined by use of the equation.
<span>Fnet = m • a</span>
If the numerical value for the net force and the direction of the net force is known, then the value of all individual forces can be determined.
Answer:

Explanation:
As we know that the power emitted by the source is given as

now we know that

now we know that energy density is given as

now we have


intensity is defined as

now we have
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now we have



here we have



now we have


Answer: b
Explanation:
Ec= (1/2)m × v^2
By the formula, you can see that the bigger the mass, the bigger the Cinetic Energy.