I'm trying to determine how many Kg of air that a Zeppelin displaces. The volume of the airship is 58142.1 meters cubed. The temperature of the air is 276.26 Kelvin. The pressure in Pascals is 42,178. Air is 78% Nitrogen and 21% Oxygen. 1 Mole of Nitrogen gas has a mass of 28 grams. 1 Mole of O...

A short answer will do, thankyou!

Why is the height through which the object falls compared to the earths radius?

Suppose I have a string and I want to check its durability i.e. the force which can break the string. We all know that the tension force is just an aspect of the electromagnetic forces ( depends upon the separation between atoms in consideration). Here is the picture of the scenario. Note the ga...

Could you please argue with work and gravity? Or however you like. I just don't get it. Thanks. A physics professor talked about if light had a mass, it should do work ($W=N\cdot m = \frac{kg\cdot m}{s^2}\cdot m$) to get out of the gravitational field. But because we somehow can see it doesn't, l...