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Does 4 cups of boiling water have the same thermal energy as 2 cups of boiling water?
Wiki User
∙ 7y ago
They both have the same specific energy since they are at the same state, but because the total energy depends on the total mass, 4 cups would have more energy than 2 cups.
Wiki User
∙ 7y ago
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What energy does water in a cup have?
Water in liquid form has heat (thermal) energy in it. Even as ice, at any temperature above "absolute zero" (-273C or 0 Kelvin) there is heat in it even if it feels cold. It also probably has gravitational potential energy - as cups typically aren't flat and on Earth they are in gravity the water (if released) has somewhere to "fall to". You could drill a hole in the side of your cup and convert some of the gravitational potential energy through a tiny water-wheel as the water ran-out.
Does a cup of hot water contain more heat than a cup of cold water?
The ocean. Here's why: Thermal energy is a measure of heat content of a material greater in temperature than absolute zero. At absolute zero there is zero heat energy, even though the material still has a minimum energy state (non thermal energy). From zero degrees rankine to 492 degrees rankine Ice has an internal thermal heat content of 0.47 btu/pound/degree. That is to say 1 pound of Ice at 32 degrees fahrenheit (492 R) has a heat content of 492 x 0.47 btu or 231 btu/lb. In order to melt that pound of ice without changing the temperature requires 144 btu. Then to raise the temperature to 212 degrees (the hottest water can get without boiling at atmospheric pressure) another 180 btu are added to the water. so the highest heat content in a pound of hot water is 231 btu + 144 btu + 180 btu or 555 btu total heat content. A cup of water weighs slightly more than 1/2 pound so the total heat content can only be slightly more than 280 btu. A cup of cold water will have slightly more than 190 btu. 2 cups of cold water will have about 380 btu total heat content, more than 1 cup hot water. So any volume greater than two cups of cold water will necessarily have a higher heat content (total thermal energy) than any 1 cup of hot water. **Note: generally in steam engineering the zero for determining heat energy is at 32 degrees fahrenheit, because in a steam cycle ice does not flow through the system, thus this is the minimum practical use of heat in the cycle. Therefor the 231 btu/lb , and the latent heat of fusion of 144 btu is not used in the steam tables and heat entropy charts, (temperature entropy charts do include these values) as this heat energy is unusable in the system. This does not mean it doesn't exist, only that it is practically unusable thus neglected. (if this were used as the zero energy state for your question then any volume of water at 32 degrees F would have zero heat content, thus less heat than a cup of warm water, this isn't the true case though).
Styrofoam cups are poor conductors of heat?
Polystyrene is a poor conductor of heat; it is largely used as a thermal insulator.
How do you move water from one cup to another without using any source of energy?
You put a paper towel in the middle connecting the two cups and with capillary action, the water should move.
How much is 165 ml of water in cups?
165 ml of water is about 0.7 cups.
For 4 cups of boiling water do you boil 4 cups of water or do you measure water after boiling?
you measure the water before boiling. after boiling would be more tricky.
What is the boiling point of 2 cups of water with 2 tablespoons of table salt in it?
100.67C
What is the boiling point of 2 cups of water with 3 tablespoons of table salt in it?
100.67C
How long to parboil 8 cups of sliced carrots?
If the water is boiling when you put them in, about 5 minutes.
How much is One pint of boiling water is how many cups or liters of boiling water?
1 Pint = 0.47 Liters It will most likely go down with time due to evaporation.
The process of cooling can be best defined as?
a cool per is a sheltie. Th also a cat is a pretty cool pet. But dogs are funner.
What will happen if you leave boiling water ice and tap water for a day in separate cups?
The boiling water will evaporate (turn to vapor). The ice will melt (turn to liquid) and then begin to evaporate (turn to vapor). The tap water will begin to evaporate (turn to vapor).
What energy does water in a cup have?
Water in liquid form has heat (thermal) energy in it. Even as ice, at any temperature above "absolute zero" (-273C or 0 Kelvin) there is heat in it even if it feels cold. It also probably has gravitational potential energy - as cups typically aren't flat and on Earth they are in gravity the water (if released) has somewhere to "fall to". You could drill a hole in the side of your cup and convert some of the gravitational potential energy through a tiny water-wheel as the water ran-out.
What is the recommended internal dosage of nettle?
Capsules, tea, tinctures. Tea: 2 oz leaves with 2.5 cups boiling water, steep for about 10 minutes. 3 to 4 cups daily. Decoction: 2 oz with 2.5 cups of water, steep for 10 minutes. And more . . .
Couscous?
Ingredients1 1/2 cups couscous2 cups boiling water or seasoned brothSalt and freshly ground black pepperAdd the couscous to the water or broth, cover, remove from heat, and let steam for 30 minutes or until plumped up.
Recycling 2 glass bottles saves enough energy to boil water for how many cups of tea?
5 cups of tea
What things are thermal insulators?
some examples are coffe cups, coffe mugs styrofoam cups and coolers.
