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Thermionic emission is the process by which electrons are emitted by a metal as a result of the heating of the metal. The electrons which are emitted are all from the sea of free electrons which bond the ...

The pressure increases when it is moved from a cool environment to a warmer environment. This is because the molecules of oxygen have more kinetic energy in a warmer environment and therefore move faster....

Firstly you need to know that the weight/mass of water displaced by the cube is equal to the weight/mass of the ice cube: 3.9 x 10^-3kg You then need to recognise that the weight of the cube is...

To find the necessary power, we need to know how much water is flowing every second, and how much energy we need to heat that amount of water.
Amount of water = 6kg per minute = 6/60 kg per second = ...

The relationship between velocity, frequency and wavelength is given by: v=fλ.
In this case, we have: v=fλ₁ and v=2fλ₂ .Since the question states that the velocity is const...