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An astronomer observes that a molecule in a galaxy travelling toward Earth emits light with a wavelength of 514 nm.
The astronomer identifies the molecule as one that actually emits light with a wavelength of 525 nm.
At what velocity is the galaxy moving?
a) Heat produced or absorbed at a junction is proportional to the current by the junction. b) This effect is produced when current is passed by junction of suitable materials.
Explain about the term electron microscope. Electron microscope: An electron microscope is a form of microscope which uses electrons to illuminate a specimen and make an enl
Q. Find the shell temperature? In a shell-and-tube heat exchanger, one fluid passes through a central tube while another fluid flows through an outer shell in the opposite dire
How to find acceleration from succesive speed?
A force of 2.5kN is needed to lift a load. How much work is done if the load is lifted by 500cm? An electromagnet exerts a force of 12N and moves a soft iron armature by a dist
Explain Brewster's experiment and describe how Brewster's law was formulated.
what is gravity
Each plate of a parallel plat capacitor has area 15 cm 2 and is being charged. The time rate of variation of electric field between the two plates of the capacitor is 12.6 x 10 9
Show the types of chromatic aberration. What do you understand by Fraunhoffer lines? Explain their origin.
Avogadro's hypothesis (Count A. Avogadro; 1811) At the same temperature and pressure, equal volumes of all of the gases contain equal numbers of molecules. In fact, it is, only
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