J (0) A copper can together with a stirrer of total heat capacity 60JK contains
200g of water at 10 °C. Dry steam at 100 °C is passed in while the water is
stirred until the whole reaches a temperature of 30 °C. Calculate the mass of
steam condensed. Specific heat capacity of water is 4,2001kg K and Specific
latent heat of vaporisation of water is 2,260,000 Jkg ​

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.