Recent content by Abdullah Wahid

I'll be looking over the internet. Thank you.

When the Earth 1)When the Earth was created, it had enough energy to do all the work it had to do and still more energy is supplied. Does the energy coming still will not get out of control? 2)How do we know that universe is growing as I believe that no one has ever seen the boundary of...

First, we have earthed the casing of our electrical appliances so that if they have a current flowing in them, it can travel to the ground. This current travel despite the fact that we do not have other terminal of circuit in the ground. Why is this so? Secondly, as you said it will travel in...

Ion is an atom with net charge due to gain or loss of electrons. When sphere is charged positively, it has lesser electrons than what it had in neutral state, so this means some atoms must habe lost their valance electons. Isn't it true

Actually i think that nature will never allow an ion to stay in air without reacting. As charges are present it must react with something , probably with air as air has surrounded it and air also have some moisture in it. If capacitor reacts, conductivity of plates should be effected as new...

Thanks for welcoming me Electrons move slowly which is drift velocity. Does these slowly moving electrons enter Earth when a circuit is connected to earth? On quora it says that they move in line. So the electrons must enter the Earth one by one as when grounded, current is still flowing which...

When we make a metal sphere positively charged by electricity, why doesn't it react with oxygen or any other element in air as metal has positive charges and one of the element in air must react with sphere as I think an ion can never stand in air without reacting? If it reacts, why doesn't...

If electrons move as current flows through a conductor, what happens when a wire is grounded? Do electrons flow in the ground?? If they do, will it effect the number of electrons in the circuit which starts from power plant such as dam and comes to our homes through a grid station? Will it not...

Sun is constantly producing energy from the particles inside it. It is not using the energy from out. So if this is true, as lots of energy is coming to the universe every day, isn't it dangerous as on day energy in the universe will be soo great to burst the universe as energy is entering but...

Got it. Thank you for helping

Have a look at this diagram where bucket is in circular motion. Why aren't perceived gravity and centripetal force cancelling out each other as they both are in opposite direction?

My teacher told me that this perceived gravity acts opposite to the centripetal force and this perceived gravity is the force which keeps water in the bucket when bucket is upside down. My question is that if both forces are in opposite direction, why aren't they cancel each others effect so...

But if centripetal force is balanced by gravity, object must travel in straight line as there is no resultant force to cause acceleration

Is there any thing like perceived gravity in circular motion?? If I consider that it is in opposite direction to centripetal force, then both perceived gravity and centripetal should cancel each other and object should move in a straight line. Why does it nit happen?