A 4 gram coin is which is initially at rest is dropped from the observation deck of a skyscraper 350 meters above the street below. What is the work done by gravity on the coin as it falls

Work done, W = 13.72 J                                                    

Explanation:

Given that,

Mass of the coin, m = 4 g

It is dropped from the observation deck of a skyscraper 350 meters above the street below.

We need to find the  work done by gravity on the coin as it falls. The work done by the gravity is simply given by :

So, the work done by gravity on the coin as it falls is 13.72 Joules.

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.