Answer:
The kelvin is the base unit of temperature in the International System of Units, It is named after the Belfast-born, Glasgow University engineer and physicist William Thomson.There are 100 degrees between the temperate at which water freezes at (273.16 K) and boils (373.16 K). Each unit on this scale, called a Kelvin rather than a degree, is equal to a degree on the Celsius scale. For this reason, just the K, not the degree symbol, is used when reporting temperatures in Kelvin.
Explanation:
It means that it has a force to make something go in one directions only
if a metal is polarized it means it has a pith pole and a north pole like a magnet
<span>C. Each half becomes a new bar magnet with two magnetic poles.
A magnet is still a magnet, no matter how many pieces it is in.</span>
Answer:
The force is 
Explanation:
From the question we are told that
The mechanical advantage is 
The load is 
The height is 
Generally mechanical advantage is mathematically represented as
Here E is the force that must be applied to move the piano
=> 
=> 
=>
