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Huygens' construction; Huygens' principle (C. Huygens):
The mechanical propagation of any wave (exclusively, of light) is equal to supposing that each point on the wavefront behaves as point source of wave emission.
Is stone take longer for the downward motion than for the upward motion Consider a stone thrown vertically upward. if we take friction against air into account, we see that the
Q. What are the affect does electricity have on the soil? Answer:- Electrical current and ions are able to cause certain molecules (and moisture) to adhere to soil. Large
Under standard state conditions at 37 o C, a biochemical reaction : A ↔ B + C has an equilibrium constant K = 0.0422 mol/dm 3 . (i) Calculate the standard
Printing Paper Industry: Synchronous motors are used in grinders. DC drives are used for pumping pulp and refining it.
A scooterist is racing at a speed of 72 km per hour. If the radius of the wheel is 20 cm, find the angular speed of the wheels. Ans) 72kmph=20m/s 20cm=0.2m; v=rw w=v/r w=20/0
Explain the Energy and Power in Circuits Electrical power dissipated in a circuit or a single circuit element can be calculated using P = I V where power (P) is in wa
What is the name of the temperature and pressure conditions at which water can be in the solid, liquid and gas phases simultaneously? Ans: The name of the temperature and pr
A standing wave is described by the wave function where x and y are in meters and t is in seconds. (a) Prepare graphs showing y as a function of x for five instants: t = 0, 5 ms,
The magnifying power of an astronomical telescope in the normal adjustment position is 100. The distance among the objective and the eye-piece is 101 cm. Measure the focal lengths
What are the Electric Generators? An electric generator is a situation in which a loop of conducting wire rotates in an area with a magnetic field. During the first half of t
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