Answer:
<h3>The answer is 9 kg</h3>
Explanation:
To find the mass given the force and acceleration we use the formula

where
f is the force
a is the acceleration
We have
f = 18 N
a = 2 m/s²
We have

We have the final answer as
<h3>9 kg</h3>
Hope this helps you
Answer:
The value is 
Explanation:
From the question we are told that
The length of the wire is 
The current density is 
The conductivity is
Generally conductivity is mathematically represented as

Here R is the resistance which is mathematically represented as

Here I is the current which is mathematically represented as

So

And

=> 
=> 
=> 
=> 
Kinetic energy is energy that is in motion, thats all I remember