Molecular Physics | Thermodynamics Answers

Why do every atom in the universe vibrating? What causes this vibration?

A heater with a power of 150W is left on for 5 minutes after the water boils. Calculate the mass of water, in unit gram, that has become vapour during the period of 5 minutes.
[Given L of steam = 2260000Jkg-1]

Two persons ordered two cups of hot tea in a cafe while waiting for a third friend. One of them immediately poured tea in his cup and mix cold milk with it. The other person poured tea immediately but mixed cold milk after the friend arrived. Who drinks warmer tea?

When 24.7 cal of heat is added to 18.8 g of aluminum at 22.0 ∘C, what is the final temperature of the aluminum?

When the pressure that a gas exert on a sealed container changes from torr to 456 torr, the temperature changes from 150°GC to 75.0°C ?

In boyle's law,If I increase the temperature of the gas enclosed in a cylinder from 0°C to 25°C in graph between pressure and volume ,which one increase and which decrase

What structure does the compound caesium iodide crystallise in?

What is the rate

An electric geyser is used to heat 5l of water from 13℃ to 83℃ .If the heat lost in radiatin is 40 kj and water equivalent of geyser is 100 . Determine the efficiency of the geyser . Take specific heat of water as 4200 J/kg.k°.

I would like to know if it was possible to make an object appear or disappear in a room what would happen with the addition of subtraction of this mass? If it was the size of a human would it cause a shockwave/explosion if it appeared and cause a black hole if it disappeared?