Answer:
Work done is zero
Explanation:
given data
Angle of kite with horizontal = 30 degree
tension in the string = 4.5 N
WE KNOW THAT
Work = force * distance
horizontal force = 
DISTANCE = 0 as boy stands still. therefore
work done = 3.89 *0 = 0
Answer:
The answer to your question is: Chemical change
Explanation:
Chemical Change is a change where substances change their properties because new substances are obtain. This is the right answer.
Compressibility
is a property in which a substance is compressed but it continous being the being so this answer is wrong.
Malleability is a property in whcih substances are flattened into thin sheets but they don't change their properties. This answer is wrong.
Physical Change is a change in which a substance changes its physical state but the properties are the same than the original substance, this answer is wrong.
If the conductor isn't working it would be blocked
Archimedes found a piece of gold and a piece of silver with exactly the same mass. He dropped the gold into a bowl filled to the brim with water and measured the volume of water that spilled out. Then he did the same thing with the piece of solver. Although both metals had the same mass, the silver gad a larger volume; therefore, it displaced more water than the gold did. That's because the silver was less dense than gold. Afterwards he applied the same method to the crown for the king he served who had got a new crown from a jeweler who gave it to him. Archimedes found a piece of pure gold that had the same mass as the crown. He placed the pure gold chuck and the crown in water, one at a time. The crown displaced more water the piece of gold. Therefore, its density was less than pure gold.
