it is estimated that 7x10kg of water pours over the Niagra falls every second. If the falls are 50m high, and if all the enrgy of the falling water could be harnessed, what power would be available?

Q: Find the force against a dam that is 8 meters deep and 83 meters long. The density of water is 1000…

A:

Q: The Huka Falls on the Waikato River is one of New Zealand’s most visited natural tourist…

A: It is given that,

Q: A crass host pours the remnants of several bottles of wine into a jug after a party. He then inserts…

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Q: If a rock and a feather are dropped in a 98-meter-long tube in which there is a vacuum, which one…

A: Given statement: If a rock and a feather are dropped in a 98-meter-long tube in which there is a…

Q: A dam on a river is built so that the wall facing the water is shaped like the region above the…

A: Write the given values to the suitable variables.Here,  are the depth of the shape, depth of water…

Q: The drawing shows a hydraulic chamber with a spring (spring constant = 1370 N/m) attached to the…

A:

Q: A jet of water gushes out of a horizontal tube of cross -section 10-2m2 at 20 m/s. What amount of…

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Q: Hint use Bernoulli's Equation Hoover Dam on the Colorado River is the highest dam in the United…

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Q: trapped pedestal must have exactly 315 N of weight on it to prevent it from going off. If you have a…

A:

Q: In order to keep a leaking ship from sinking, it is necessary to use 117.6 N of force to pump 12 kg…

A:

Q: The drawing below shows a hydraulic chamber in which a spring (spring constant = 1620 N/m) is…

A: The spring constant is, k=1620 N/m The mass of the rock is, m=38.2 kg

Q: 7. Water travels through a 9.6 cm diameter fire hose with a speed of 1.3 m/s. At the end of the…

A: Given: The diameter of the fire hose through which the water travel: d1 = 9.6 cm (0.096 m). The…

Q: A flat plate of area 2.5 x 10° mm is pulled with a speed of 0.4m/s relative to another plate locate…

A: We have a flat plate of area 2.5×106 mm2 is pulled with speed of 0.4 m/s relative to another plate.…

Q: Hoover Dam on the Colorado River is the highest dam in the United States at 221 m, with an output of…

A: Given values: Height of elevation, h=110 m Average flow rate, Q=655 m3/s Acceleration due to…

Q: Several years ago, it came a big storm at the lake. My boat was attached to the dock. The waves and…

A: The boat sinks into the water, it is due to the pulled down by its weight and pushed up by the…

Q: Consider a pumped hydro system that is used for energy storage. During off-peak hours, excess…

A: Solution:   Given Values,   Height of the storage from the turbine (H)=100 m   We know that,   The…

Q: A hole of area 1 mm2 opens near the bottom of a large-water storage tank, and a stream of water…

A: Area=1mm² Height=20m

Q: The left ventricle of a resting adults heart pumps blood at a flow rate of 81.0 cm^3/s, increasing…

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Q: Water c omes out of the bottom of this water tank at a speed of 4.22 m/s. If the water is directed…

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Q: For the figure shown below, a pipe connects two reserviors. An 8 inch pipe (blue in the figure)…

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Q: The given figure shows the cross section of a dam and its reservoir. Choose the correct option(s)…

A: Pressure at a depth h is P = P' + dgh P' = atmospheric pressure d = density of the water So,…

Q: Find the force against a dam that is 18 meters deep and 69 meter

A: Given Depth h = 18 m Density d = 1000 kg/m3

Debye Theory of Solids

In solid-state physics, debye theory is used to estimate the phonons contributing to the specific heat capacity in a solid. It explains that the specific heat is a consequence of the vibrations of the atomic lattice of the solid, which is in contrast to the Einstein model. In the Einstein model, solids are treated as independent, non-interacting quantum harmonic oscillators. This model clearly explains the low-temperature dependence of the heat capacity, which is proportional to T3. This is known as Debye T3 law.