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: Dehine Total Polential of stskem, when external and internal forces conservatiue in nature the…

A: Given that:- Internal and external forces are conservative

Q: The Deligne Dam on the Cayley River is built so that the wall facing the water is shaped like the…

A:

Q: 1.1 The density of alcohol is 790 kg/m3. Calculate its specific weight, specific gravity and…

A: As per company policy only one question per session permitted.So please initiate a new session for…

Q: Show that the horizontal force that water exerts on the vertical flat face of a dam is given by F =…

A: Given data: Width of the dam W. Density of the water ρ. The pressure p at a depth x is given as,…

Q: steel bar and an aluminum bar of the same volume are thrown into the sea. At the sea floor (having…

A: Bulk modulus B = -ΡV/ΔV P = pressure  ΔV = change in volume  V= initial volume

Q: Calculate the pressure on the top lid of a chest buried under 4.50 meters of mud with density 1.75…

A:

Q: where will you weigh more? at sea level or on a plane, over water or an ore deposit, or a salt…

A: At sea level, you will weight more than other mentioned places, because gravity is stronger at 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: Calculate the pressure on the top lid of a chest buried under 3.95 meters of mud with density 1.75…

A: There are three components of pressure are acting on the chest. They are pressure due to water,…

Q: At $602 per ton, what would be the cost of straight urea needed to apply 0.9 lb N/M 3 times per…

A: Fertilizers play a crucial role in maintaining soil fertility and crop productivity. Among the…

Q: A hydro station of 3 MW generate 358 Mwh for one week. If the water discharge at one week is 542000…

A: Concept used: Efficiency is given by ratio of output power to input shaft power.

Q: If the blade length is 56.7 m, wind speed 14.1 m/s and air density is 1.23 kg/m3, then the wind…

A: Calculate the area of cross section of the blade. A=πr2=π×56.7 m2=10099.87 m2 Here, A is the area of…

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: Water is pumped through a pipe of diameter 15.0 cm from the Colorado River up to Grand Canyon…

A: (a)Height difference,

Q: Ideal incompressible water is flowing in a drainage channel of rectangular cross-section. At one…

A: Given Width of the channel at point 1 is w1=12 m Depth of water at point 1 is d1=6.0 m Speed of…

Q: The pressure at the bottom of the Marianne Trench in the Pacific Ocean is about 1.8 × 10^8 Pa. Find…

A: Given that, pressure at the bottom of Marianne Trench is P = 1.8×108 Pa Suppose that volume of 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: (1) A siphon having a diameter d of 100 mm is positioned as shown in the picture. The flow losses…

A: Flow of fluid are of many types. Flow may be laminar, turbulent, etc. Continuity means the fluid…

Q: low rate out of rese /s and 0.25m^3/s r ent of friction for t

A: Given as, QA =15m3s,QB =25m3s,j' =0.008.

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

A:

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

A: To calculate the total head loss for the system, we need to determine the head loss in each…

Q: If a fulcrum (support point) is placed at the 30 centimeter mark on a meter stick and a 240 gram…

A: Consider the the diagram below.

Q: Water is coming out of a hose that is 5 m above the ground at a speed of 20 m/s. The water main is 4…

A:

Q: The palm of the hand is about 7.5 cm by 10 cm. How many Newton's of force exerted on the palm by…

A: We know, The newton force is given as , F=PA where P is pressure A is the area.

Q: An airplane flies at 300 km/h at sea level at 20°C. The propeller diameter is 1.8 m, and the…

A: Solution:   Given Values,   Velocity(v)=360 Km/hr=360×10003600 m=100 m/s Airplane velocity (v1)=300…

Q: A fluid has velocity components u=2(x²-y²) m/s and V=-4xy m/s, where x and y are in meters.

A: Given: The velocity components are u=2(x2-y2) ms-1 and v=-4xy ms-1. Pressure at point B(3 m, 2 m) is…

Q: A Boeing 747-8I aircraft has a mass of 447,700 kg. This includes cargo. The combined area of both…

A: Since the pressure difference lifts the plane. Thus, the pressure difference must have to create a…

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.