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Water going over Iguacu Falls on the border of Argentina and Brazil drops through a height...
One cubic meter of water (see Table 4.4 for the mass density of water) flowing over...
One cubic meter of water (see Table 4.4 for the mass density of water) flowing over the Lower Falls in Yellowstone National Park drops 94 m. If all of the water's potential energy is converted to kinetic energy at the bottom of the falls and the kinetic energy goes to heat the water, what is the temperature increase of the water?
The highest waterfall in the world is the Salto Angel Falls in Venezuela. Its longest fall...
The highest waterfall in the world is the Salto Angel Falls in
Venezuela. Its longest fall has a height of 807 meters. If water at
the top of the falls is at rest and at 15°C, what is the maximum
temperature of the water at the bottom of the falls? Assume all the
kinetic energy of the water as it reaches the bottom goes into
raising its temperature. The specific heat capacity for water is
4186 J/kg°C.
3. The highest...
What is the maximum possible increase in the temperature of water from if it falls from...
What is the maximum possible increase in the temperature of water from if it falls from the top of a 36 m high waterfall to the bottom? (Assume that all its potential energy is used up in heating the drop.)
James Joule (after whom the unit of energy is named) claimed that the water at the bottom of Niagara Falls should be war...
James Joule (after whom the unit of energy is named) claimed that the water at the bottom of Niagara Falls should be warmer than the water at the top, 51 m above the bottom. He reasoned that the falling water would transform its gravitational potential energy at the top into thermal energy at the bottom, where turbulence brings the water almost to a halt.. If this transformation is the only process occurring, how much warmer will the water at the...
Kerepakupai Vena in Venezuela, more commonly known as Angel Falls, is the world's highest waterfall with...
Kerepakupai Vena in Venezuela, more commonly known as Angel Falls, is the world's highest waterfall with a height of 979 m and 47 different plunges. The longest plunge (for the water) is 807 m. At the bottom of the fall, the kinetic energy of the water is converted into thermal energy. This results in a temperature increase of the water. If the water has a temperature of 17.1°C when it gets to the bottom of the plunge, what was the...
A dam collects water at a height of 300m. The water can be let down through a pipe. As it falls t...
A dam collects water at a height of 300m. The water can be let down through a pipe. As it falls to the ground it loses potential energy but it gains kinetic energy. 100 tonnes (note 1 tonne 1000 kg) of water are let out from the dam and reach the ground, 300m below; all the gained kinetic energy is then harnessed by a perfectly efficient turbine and converted into energy to power houses in the valley. The Bureau of...
Approximately 2.1 x 105 kg of water falls 14 m over a waterfall each second. (a)...
Approximately 2.1 x 105 kg of water falls 14 m over a waterfall each second. (a) What is the decrease in the gravitational potential energy of the water-Earth system each second? (b) If all this energy could be converted to electrical energy (it cannot be), at what rate would electrical energy be supplied? (The mass of 1 m3 of water is 1000 kg.) (c) If the electrical energy were sold at 1.7 cent/kW·h, what would be the yearly income in...
Approximately 1.0 x 106 kg of water falls 45 m over a waterfall each second. (a) What is the decrease in the gravitation...
Approximately 1.0 x 106 kg of water falls 45 m over a waterfall each second. (a) What is the decrease in the gravitational potential energy of the water-Earth system each second? (b) If all this energy could be converted to electrical energy (it cannot be), at what rate would electrical energy be supplied? (The mass of 1 m3 of water is 1000 kg.) (c) If the electrical energy were sold at 3.3 cent/kW·h, what would be the yearly income in...
When a manganese bar of mass m is dropped through a height difference Δh, its potential...
When a manganese bar of mass m is dropped through a height difference Δh, its potential energy changes by the amount mgΔh, where g is the acceleration of gravity, equal to 9.81 m s-2. Suppose that when the bar hits the ground, all that energy is converted to heat, increasing the temperature of the bar. If the specific heat capacity of the material in the bar is 0.479 J K-1 g-1, calculate the height from which the bar must be...
Additional info: Meal = 1720 Kilocalories Mass of myself = 50 kg The Joule () is...
Additional info:
Meal = 1720 Kilocalories
Mass of myself = 50 kg
The Joule () is the SI unit of energy. (J = kg:m? S2 A calorie is another unit of energy. The definition of a calorie is the amount of heat (energy) necessary to raise the temperature of Ig of water by 1° Celsius. Ig of water occupies 1 milliliter (ml) = 1 cubic centimeter (cm) of volume. lkcal=4186J Energy comes in many forms and energy may be converted...
The highest waterfall in the world is the Salto Angel Falls in
Venezuela. Its longest fall has a height of 807 meters. If water at
the top of the falls is at rest and at 15°C, what is the maximum
temperature of the water at the bottom of the falls? Assume all the
kinetic energy of the water as it reaches the bottom goes into
raising its temperature. The specific heat capacity for water is
4186 J/kg°C.
3. The highest...
What is the maximum possible increase in the temperature of water from if it falls from the top of a 36 m high waterfall to the bottom? (Assume that all its potential energy is used up in heating the drop.)
A dam collects water at a height of 300m. The water can be let down through a pipe. As it falls to the ground it loses potential energy but it gains kinetic energy. 100 tonnes (note 1 tonne 1000 kg) of water are let out from the dam and reach the ground, 300m below; all the gained kinetic energy is then harnessed by a perfectly efficient turbine and converted into energy to power houses in the valley. The Bureau of...
Additional info:
Meal = 1720 Kilocalories
Mass of myself = 50 kg
The Joule () is the SI unit of energy. (J = kg:m? S2 A calorie is another unit of energy. The definition of a calorie is the amount of heat (energy) necessary to raise the temperature of Ig of water by 1° Celsius. Ig of water occupies 1 milliliter (ml) = 1 cubic centimeter (cm) of volume. lkcal=4186J Energy comes in many forms and energy may be converted...
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