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The rhinestones in costume jewellery are glass with index of refraction 1.50 to make them more reflective they are often coated by a layer of silicon monoxide of index of refraction 2.00 what is the minimum coating thickness required to ensure that light of wavelength 560 nm and of perpendicular incidence will be reflected from the two surfaces of the coating by fully constructive interference
A 0.15g honeybee acquires a charge of 22pCwhile flying. The electric field near the surface of the earth is typically 100N/C, What is the ratio of the electric force on the bee to the bee's weight
A man of mass 62.3 kg stands on a scaffold supported by avertical rope at each end. The scaffold has a mass of 24.6 kgand is 3.7 m long. Suppose the man stands to the right fromthe middle of the scaffold that is a distance one sixth of the length ..
find the final temperature when 1000 g of water at 20 celcius in a 125 g copper calorimeter is mixed with 50g of steam originally at 153 celcius.
A block and a gun are firmly affixed to opposite ends of a long glider mounted on a frictionless air track. find the mass of the gun-glider-block system
Suppose you have a solution that contains 0.0490 M Ca2 and 0.0940 M Ag, When the second cation just starts to precipitate, what percentage of the first cation remains in solution
a submerged scuba diver looks up towards the calm surface of a freshwater lake and notes that the sun appears to be 35
question a box of sand initially at rest is to be pulled across a floor by means of a cable in which the tension cannot
A layer of liquid B floats on liquid A. A ray of light begins in liquid A and undergoes total internal reflection at the interface between the liquids when the angle of incidence exceeds 39.0°.
A pill bottle 3.0 cm tall is placed 12 cm in front of a mirror. An upright image 9.0 cm tall is formed. What kind of mirror is this, and what is its radius of curvature?
A bat emits a sound whose frequency is 80 kHz. The speed of sound in air at 20.0°C is 343 m/s. compute the wavelength of the sound
The brightest star in the night skyis Sirius, which is at a distance of 8.30×1016 m. how far back in time are we seeingit
The oxygen taken in by the body reacts with fats, carbohydrates, and protein, liberating energy internally at a rate of about 1.96×104 J/Liter. what is his rate of oxygen consumption
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