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Q: Does 1L of water at 65 F have more or less or the same energy as 1L of water at 65 C?
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Is the energy generated from falling water in a hydroelectric plant the same more or less than falling water?

It's less. There are "resistance" losses in any system, so not all the energy of the falling water can be changed into electric power. Certainly we can't get more energy out than is put in. Perpetual motion isn't an option here.


Is temperature the same as heat energy?

temperature is a way to measure heat, so they are not exactly the same Note, a cup of water at the same temperature as a gallon of water ... has less energy.


Why do you need to become efficient?

because that means less energy is used. if something is more efficient than something else it is so because it can either use less energy to do the same thing or the same amount of energy to do more


Which requires more power-walking or running up the steps and why?

Running up requires more power. The reason is that you spend the same energy in less time.Running up requires more power. The reason is that you spend the same energy in less time.Running up requires more power. The reason is that you spend the same energy in less time.Running up requires more power. The reason is that you spend the same energy in less time.


Does sound travel under water faster than in air?

Sound should travel with less energy loss underwater as water has a more tightly packed particles than air and so can travel between the particles with less energy loss than in air but its speed is the same.


Does steam have more energy than water?

No. Assuming you have the same mass of each steam has more energy than hot water, because water needs to gain energy in order to evaporate.


How might the potential energy of water in a dam be increased?

By filling the dam with more water, because by doing that it gains more gravitational potential energy which is the same as potential energy.


Does salt water around the world have the same density?

No, it depends on the volume of water that can dissolve the salt. If the volume of water is more then it dissolves more salt and the density will be more and if the volume of the water is less then it dissolves less salt and the density will be less.


Does 1 kilogram of water have the same amount of thermal energy as 2 kilogram of water?

No they wouldn't, this refers to specific heat capacities. Generally, gold has a lower heat capacities than of water, thus it takes less energy to change the temperature of gold than it does to change the temperature of water. So if you add the same amount of heat to both systems of water and gold, the gold will be hotter than the water.


Does one liter of water at 50 degrees celsius have more less or the same kinetic energy as 2 liters of water at 50 degrees Celsius?

No, all pure water boils at 100oC., 212oF., assuming all other 'standard' conditions apply.


Why does melting ice require much less energy than boiling the same mass of water?

Because Water's latent heat of fusion is much less than its latent heat of vaporization. In English: It takes less energy to change a gram of ice at 0°C into a gram of water at the same temperature than it takes to change a gram of water at 100°C into a gram of steam at the same temperature.


Why the water at the bottom of a pot of simmering water becomes less dense as it is heated?

As water, or any substance, absorbs heat energy, its molecules gain kinetic energy. Because they are moving around more, they take up more space. Density is the measure of how much stuff is in a given space. More space and same amount of stuff equals lower density.