Needed to be pointed out that mechanical advantage is when the distance traveled is traded for force applied
from the following options, the one that is considered a mechanical advantage is : C. a longer lever helps lift more weight
hope this helps
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

=> 
=> 
=> 
=> 
The heat of fusion must be approx from 0 to infinity
Answer:46.05 mm
Explanation:
Given

speed 
allowable shear stress 
Power is given by



From Torsion Formula

where J=Polar section modulus
T=Torque
=shear stress
For square cross section

where a=side of square

Substituting the values in equation 1


