Evaluating the wavelength of the light
Light falls on a pair of slits which is .00204 cm apart. The slits are 91.4 cm from the screen. The first-order bright line is 1.98 cm from the central bright line. Determine the wavelength of the light? Answer must be in units of nm.
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This is an example of a worm-like-chain (WLC) model, where lp is persistence length and L is the contour length and kB is Boltzmann's constant.
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The spherical weather balloon is filled with hydrogen till its radius is 3.00 m. Its total mass comprising the instruments it carries is 13.0 kg. (i) Determine the buoyant force acting on the balloon, supposing the density of air is 1.29 kg/m3.
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If borax solution takes 0.76mL of 3M H2SO4 to neutralize a 10mLsample of Borax, Determine the concentration of borax solution (mol/L).
At the lower point the pressure is around 1.67 x 105 Pa and the pipe radius is 2.70 cm. At the other point 2.50 m higher, the pressure is 1.33 x105 Pa and the pipe radius is 1.30 cm. (i) Determine the speed of flow in the lower section.
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