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Give reasons for the following
(i) Long distance radio broadcasts use short-wave bands.
(ii) The small ozone layer on top of the stratosphere is crucial for human survival.
(iii) Satellites are used for long distance TV transmission.
Piles of snow on slippery roofs can become dangerous projectiles as they melt. Consider a chunk of snow at the ridge of a roof with a pitch of 27. As the snow begins to melt, the c
(a) Using the thermochemical tables provided, calculate the standard molar enthalpy of combustion at 298 K for the following hydrocarbon: C C 2 H 4 (g ) (ethene) (b) If
utmost Velocities in a Quarter Mile To verify the maximum speed possible for a wheel driven vehicle we will suppose that the coefficient of friction between the tires and the g
Determinism principle It is the principle that if one knows the state to an infinite accuracy of a system at one point in time, one would be capable to know about the state of
What are the disadvantages of fibers optics? This must be borne in mind that the real nature of the conductor, in lighting systems, shows only one of the components responsible
Can you explain in single slit diffraction intensity of 1 st secondary maximum is less than that of principal maximum by how many times?
The total energy of a particle, executing simple harmonic motion is Ans) In simple harmonic motion when a particle is displaced to a position from its mean position, then its kin
Violet light (λ = 415 nm) falls on a slit that is 0.040 mm wide. The distance among the centers of the central bright band and the third-order dark band is 18.7 cm. What is
Portrayed is a ray from an object which heads toward and then into a lens. Suppose if the ray is a principal ray where does it go from there? Ans: This is the simple p
How are the ultrasonics deals with sound waves? Ultrasonics, deals along with sound waves which pass a specified point at least 20,000 times per second. As ultrasonic waves vib
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