hot or cold water?

Question

which is the strongest or are they the equal? for instace adding equal amounts of water together 1ltr of 20 deg c to 1ltr of 40 deg c at a room temp of exactly 30 deg c what would would happen????

Answer 1

The effect is equal. A calorie is defined as the amount of energy needed to raise the temperature of one gram of water by one degree Celsius. From this, you can see that for a given amount of water, raising the temperature by a given amount will always take the same amount of energy, regardless of the starting temperature.

If you look at the amount of heat transfer to the liter of 20 C from 30 C water, it is the same as the amount of heat transer to the 30 C from the 40 C, since the amounts are the same and the temp difference is 10 C in both cases.

Hope that helped!

Answer 2

The Hot and cold will not mix straight away, the hot water will stay at the top and the cold at the bottom. The will mix when they acheive equal temperature.

As time passed the hot water will worm the cold and the cold will cool the Hot so they have equal action on each other.

The water will eventually reach the same temp and completley mix.

Try this next time you are in he bath. If you fill it first with hot then put in cold you will find it wormer at the top.

Answer 3

Equal

Answer 4

The reason for questions like this is to encourage scientific process.It is easy to find the answer from doing the test at home.Boil a kettle of water,100c.take a cupful of cold water and take its temperature.Mix equal quantities and stir.What do you find?

Answer 5

it would end up less than 30 for a while then the ambient temp would bring it back up. the reason is because of the molls been further apart liken it to hot water freezes quicker than cold