How ISS works ? Give a detailed answer
Answers
Answer:
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Explanation:
Stretching out to the sides of the space station are
the solar arrays. These arrays collect energy from
the sun to provide electrical power. The arrays are
connected to the station with a long truss. On the
truss are radiators that control the space station's
temperature.
Answer:
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✷In physics, measure of energy transfer that occurs when an object is moved over a distance by an external force at least part of which is applied in the direction of the displacement.
✷Work done on a body is accomplished not only by a displacement of the body as a whole from one place to another but also, for example, by compressing a gas, by rotating a shaft, and even by causing invisible motions of the particles within a body by an external magnetic forceIf the force is constant, work may be computed by multiplying the length of the path by the component of the force acting along the path.
✷To express this concept mathematically, the work W is equal to the force f times the distance d, or W = fd.
✷If the force is constant, work may be computed by multiplying the length of the path by the component of the force acting along the path.
✷To express this concept mathematically, the work W is equal to the force f times the distance d, or W = fd.
✷ in this context, is done unless the object is displaced in some way and there is a component of the force along the path over which the object is moved. Holding a heavy object stationary does not transfer energy to it, because there is no displacement. Holding the end of a rope on which a heavy object is being swung around at constant speed in a circle does not transfer energy to the object, because the force is toward the centre of the circle at a right angle to the displacement. No work is done in either case.
The mathematical expression for work depends upon the particular circumstances. Work done in compressing a gas at constant temperature may be expressed as the product of pressure P times the change in volume dV; that is, W = PdV. Work done by a torque T in rotating a shaft through an angle φ may be expressed as the product of the torque times the angular displacement; that is, W = Tφ.
★Work done on a body is equal to the increase in the energy of the body, for work transfers energy to the body. If, however, the applied force is opposite to the motion of the object, the work is considered to be negative, implying that energy is taken from the object. The units in which work is expressed are the same as those for energy, for example, in SI (International System of Units) and the metre-kilogram-second system, joule (newton-metre); in the centimetre-gram-second system, erg (dyne-centimetre); and in the English system, foot-pound.
★The speed of light in a vacuum (c) appears in electromagnetic theory and in relativity theory; in the latter it relates energy to mass through the equation E = mc2. Its value does not depend on any particular experimental conditions such as would affect the speed of a sound wave in air (for which air temperature and the direction and speed of any wind would matter). It is a universal constant of nature.
★The charge on the electron (ε) is a fundamental property of a physical particle; it is the smallest unit of electric charge found free in nature. Knowledge of its numerical value is required in many areas of physics and chemistry—e.g., in calculating the mass of an element or compound liberated by passage of a certain amount of current through an electrochemical cell.
★Planck’s constant (h) is not itself a property of a fundamental particle but is a constant appearing in the equations of quantum mechanics. It relates the energy (E) of a photon (a quantum of electromagnetic radiation) to its frequency (ν) through the equation E = hν.
Explanation:
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