Answer:
4370.83044 m²
Explanation:
= Net work done = 570 kW
= Low temperature resrvoir = 20 °C
A = Area of solar collector
Amount of solar heat received = = 0.315A
The theoretical minimum solar collector area required is 4370.83044 m²
Answer:
Stable atom
Explanation:
A stable atom is one that has a balanced nuclear inter-particle force reaction as such the binding energy of a stable atom is sufficient to permanently keep the nucleus as one unit. Examples of a stable atom are the atoms of monoisotopic elements such as fluorine, sodium, iodine, gold, aluminium, and cobalt.
In a stable atom the expected number of proton, neutron, and electron are present while in an unstable atom or radioactive atom, there are more than the expected number of neutrons or protons, such that the internal energy of the nucleus is excessive and more than the binding energy, which can lead to radioactive decay.
First of all the project motion is in the form of a parabolic path and it is a common practice that a paper airplane always follow a parabolic path, whenever it is thrown in the air, and gravity is acting upon the plane, like any other projectile.
The agriculture land needed to grow the willow is 1500000 Hectares
<h3>What is Power?</h3>
Power can be defined as the rate at which work is done by an object. The S.I unit of power is Watt(W).
A coal burning power station burns 6 million tonnes of coal per kg. Coal has a average energy value of 29.25 MJ per year. Wood chip from willow trees has an energy value of 13 MJ per kg. A hectare of agricultural land can produce 9 tonnes of drt willow wood per year.
The coal consumption per year = 29.25 x 1000 x 6000000
=175500000000 MJ
If this power station burned dry willow wood instead of coal, agriculture land would be needed to grow the willow,
1 hectare of willow will produce 9 x 13x 1000 = 117000 MJ.
The agriculture land needed to grow the willow is
= 175500000000 MJ / 117000 MJ.
= 1500000 Hectares.
Thus, agriculture land needed is 1500000 Hectares.
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The answer to your question is in fact <u>True</u>
Why?
Sound waves can only travel through things like water, walls, and solids. so sound cannot travel through space because there is no matter for the vibrations of the sound to work in.