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monochromatic light of wavelengthnbsp561nbspnm passes through a single slit and the diffraction pattern is observed on
two thin parallel slits that arenbsp00117nbspmm apart are illuminated by a laser beam of wavelengthnbsp620nbspnma on a
1 a space heater has a power specification of 1161 watts how much current in ampres does the heater draw from a 113
laser light is passed through a rod made out of a material with an index of refraction ofnbsp163 a lengthnbsplnbsp 450
at the low temperatures found in some interstellar molecular cloud around 100 k molecular oxygen emission is strongest
a 9 volt battery is connected across the plates of a capacitor 70 pf calculate the charge on each plate and the number
if the conductance of a single ion channel is 1ps and its capacitance per cm2nbspis 1mf and the time constant for a
a ball is released from the top of a cliff it hits the ground 26 seconds later assuming the ball is a free falling
a 12kg block slides along a horizontal frictionless surface at a speed of 65ms when it runs into a spring with
light goes from medium a to medium b the incidence angle is 30 and the refraction angle is 40 in which medium is the
three very long straight parallel wires each carry currents of 200 a as shown in the gurethese wires pass through the
a what is the difference between a mechanical wave and an electromagnetic wave in complete sentencesb give one example
a what is the natural frequency of a spring -block system if the mass of the block is 05 kg and the spring constant is
it takes 510nbspj to raise the temperature of an 900nbspg piece of unknown metal from 130nbsponbspc to 242nbsponbspc
a volume of 120 ml of h2o is initially at room temperature 2200 c a chilled steel rod at 200 c is placed in the water
the combustion of pentane c5h12 occurs via the reactionc5h12g8o2grarr5co2g6h2ogwith heat of formation values given by
a piston has an external pressure of 150 atm how much work has been done in joules if the cylinder goes from a volume
550 g of h2so4 reacts with 0065 g of calcium hydroxide in a calorimeter the initial temperature of the acid is 223oc
if the vant hoff factor for nacl is 185 what is the freezing point of a 068 molal nacl solution in waternbspkfnbsp
isotonic saline solution which has the same osmotic pressure as blood can be prepared by dissolving 1023 g of nacl in
the density of a certain metal is 3594 gcm3 and the metal atom radius is 2173 pm if the metal crystallizes in a
the chlorofluorocarbon ccl2f2 was once used as a refrigerant what mass of this substance must evaporate to freeze 2 mol
1972 g of gold at 4500oc is dropped into 1500 ml of water at 200oc the final temperature of the water and the gold at
350 ml of a 10 m cuso4 solution is left on the counter and allowed to evaporate cuso4s saturation solubility point is
1 o2 is generated into a 250ml beaker by water displacement at a pressure of 730 torr and a temperature of 25c what is