How is the index of refraction computed?

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Why dies a man carrying a load on his back lean forward ?

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Explain interference?

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Is exothermic reaction useful in Lasing process? give reasion of ur answere?

2 Answers   DRDO,

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Mercury thermometer is constructed as shown in Figure The capillary tube has a diameter of 0.004 cm, and the bulb has a diameter of 0.250 cm. neglecting the expansion of the glass, find the change in height of the mercury column that occurs with a temperature change of 30.0 °C.

3 Answers   ITESM,

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assuming friction is negligible, if a lever has a mechanical advantage of 5, how much effort in newtons is needed to lift a 10 newton load?

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How do you calculate shaft power?

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What seven colors appear to be white when mixed together?

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When I have one cubic foot of air enclosed within a weightless container and place it on the surface of a fresh water body of water at sea level how much mass (weight) will it support before it sinks below the surface?

1 Answers  

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What is the smallest size of plane mirror in which a man can see his fill image length ?

1 Answers  

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what is the principle used in electromagnetic spectrum?and why there is a necessary of having an electron with unpaired spins?and how the uncertainity principle is used to determine the frequency of an spectral lines ?

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discuss the statement "almost all the energy from a cars engine ultimately goes to pushing air around and heating the brakes"

1 Answers  

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