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In the beginning of what ? At the end of what ?
Do you mean "Why does hot water cool faster than cool water ?" ?
Because the rate at which heat passes from a warm object to a cool object
depends on the difference in their temperatures. So, as the warm object
becomes less warm and the difference in their temperatures becomes smaller,
the rate at which heat flows between them also becomes less.
Wiki User
∙ 12y ago
Water cools faster at the beginning because there is a larger temperature difference between the hot water and the surrounding air. As the water cools down, the temperature difference decreases and the rate of cooling slows down. Additionally, the evaporative cooling effect is greater when water is at a higher temperature, contributing to faster initial cooling.
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How many btu's must be removed from one pound of water at 200f for it to end up as ice at 30f?
To convert water at 200°F to ice at 30°F, you need to remove 1 BTU to cool water from 200°F to 32°F to become ice. Then, you need to remove 144 BTUs to cool the ice from 32°F to 30°F. So, total BTUs needed to remove from one pound of water at 200°F to end up as ice at 30°F is 144 + 1 = 145 BTUs.
How can you change this question does an ice cube melt faster in air or water into a testable question?
The question, 'Does an ice cube melt faster in air or in water?' is fine; note that I added the word 'in' before the word 'water' for further clarity but it was not incorrect without the addition. You could change 'faster' to 'more quickly' but the simpler the question is worded the better. Don't forget to capitalize the first word in the sentence and place a question mark at the end.
How does water movement relate to pressure?
Water movement is influenced by pressure differences, with water naturally flowing from areas of high pressure to low pressure. This movement can be observed in phenomena like water flowing downhill or water being forced through pipes. Pressure also affects water's ability to dissolve gases and solutes, with higher pressures generally leading to increased solubility.
What lever class is a water tap?
A water tap is typically classified as a third-class lever. In this type of lever, the effort is applied at one end, the load is at the other end, and the fulcrum is positioned between the effort and the load. A water tap operates by pushing down on one end to lift the valve at the other end, controlling the flow of water.
What does a cool down involve?
A cool down involves performing low-intensity exercises and stretches at the end of a workout session to gradually decrease your heart rate, prevent muscle soreness, and aid in recovery. Cool downs help promote flexibility and reduce the risk of injury.
What color is at the warm end of the visible spectrum and what color is at the cool end?
The warm end of the visible spectrum is red, while the cool end is violet.
When did Honey Is Cool end?
Honey Is Cool ended in 2000.
How much faster will it make your car by replacing the 300 rear end with a 390 rear end?
You will be quicker not faster.
Does riding a motorcycle help to end your period faster?
Riding a motorcycle doesn't help to end your period faster.
How is dry ice better than water ice?
Dry ice is better for some purposes because it sublimates (turns directly into gas) at a much colder temperature (-78.5°C), creating a colder cooling effect. It also doesn't leave behind any liquid residue, making it ideal for applications where you don't want moisture. However, it is more dangerous to handle due to the extreme cold temperatures and the fact that it can displace oxygen in enclosed spaces.
Why does water take the longest to cool down?
This is related to the polar nature of the water molecules. That is, the water molecules have a positive and a negative end, which makes them attract one another - and additional energy is required to separate them.
When did Cool McCool end?
Cool McCool ended on 1969-08-30.
When did Cool Center end?
Cool Center ended on 2010-04-17.
When did Cool Beans Productions end?
Cool Beans Productions ended in 2002.
When did Cool Million end?
Cool Million ended on 1972-12-20.
When Did Cool Jazz End?
Cool jazz ended in 1956
How does a 1993 Kawasaki 750 SS jet Ski cool?
Well how does a 1993 Kawasaki 750Ss jet ski cool? The motor of the 1993 750SS and all other two stroke jet skis cool with water that flows through the water jackets of the motor and the exhaust. I will further explain this using jet engine theory. A jet engine sucks in air, squeezes the air, and the blows it out the back end, which in case makes the plane or car move very fast. Well in case of a jet ski, it sucks the lake or ocean water in through the intake grate on the bottom of the ski, runs it through the different areas of the motor and the jet pump, (squeezes it)and then shoots it out the jet nozzle on the rear of the ski, in which case propels the ski through the water. The more throttle the rider gives the ski, the faster the process goes and thus the faster the jet ski will move.
