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An electron is in a box of width 3*10^-10m.what are de broglies wavelength and magnitude of momentum of the electron if it is inA)n=1 level B)n=2 level C)n=3 levelAns) Use the principe wavlength=2L/m
A rocket weighs 9800N. What applied force gives it a vertical acceleration of 4m/sec/sec?
Assignment Just question and answer Quotation; how much
what is friction? What are the factors affecting for it? Advantages and disadvantages of it
A sphere of radius R touches two adjacent sides of a room.It also touches an inclined plane at a height of R/5 from the floor.the inclined plane moves towards the sphere at the spe
Who makes fiber optics? Glass manufacturers mostly make Glass fibers. Mainly chemical companies fabricate PMMA fibers. Companies, both private and public, manufacture other kin
If you "bow" a string on a violin you hear a note with a frequency of 1020 Hz. If the length of the string is about 40cm, what is the "wave" on the string? Draw a diagram to show
Anode rays were discovered by: (1)Goldstein (b)J. Stoney (3)Rutherford (4)J.J. Thomson Ans: (1)Goldstein
A ball is thrown vertically upwards from the ground with a speed of 80 feet/second. In the English system of units, Determine the magnitude and direction of the acceleration
why does rain water boils faster than fresh water
Consider air (ideal gas) as working substance inside a piston-cylinder device (closed system). This air undergoes a power cycle as shown in figure. Determine work output per unit m
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