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We wish to coat a flat slab of glass (n = 1.50) with a transparent material (n = 1.25) and illuminate with light of wavelength 600 nm (in vacuum). For what minimum thickness of the coating will the light be (a) reflected back to the observer and (b) transmitted during the glass (i.e. no reflection back to the observer)? [Note: t = 0 is not an answer for (b)].
A turtle and a rabbit engage in a footraceover a distance of 4.00 km. What was his average speed before he stopped
A 1.2 m long steel rod with a diameter of 0.50cm hangs vertically from the ceiling. An auto engine weighing 4.7kN is hung from the rod. By how much does the rod stretch
A hill that has a 25.7% grade is one that rises 25.7 m vertically for every 100.0 m of distance in the horizontal direction. At what angle is such a hill inclined above the horizontal?
A rainbow viewed from an airplane may form a complete circle. Where will the shadow of the airplane appear? Explain
Vector A has a magnitude of 9.10 units and makes an angle of 54.0° with the positive x-axis. Vector B also has a magnitude of 8.00 units and is directed along the negative x-axis. Using graphical methods find the following.
A planet of radius R is made up of three segments; a core of radius R/3 and density r/3, a middle shell from radius R/3 to 2R/3 and density r/2, and an outer shell from radius 2R/3 to R and density 3 r. What is the average density of the planet as a ..
Two point charges of equal magnitude are 6.1 cm apart. At the midpoint of the line connecting them, their combined electric field has a magnitude of 37 N/C
A 70kg person running at an initial speed of 4m/s jumps onto a120kg cart initially at rest. Determine the displacement of the person relative to theground while he is sliding on the cart
suppose that two balls of mass 2.5 x 10-4 kg each carry equal charges and are suspended by identical threads of length
An escalator is needed to carry 80 passengers per minute a vertical distance of 7.0 meter. Mass of each passenger is 65 kilogram. Determine the total amount of work
A 65- person stands on a scale in a moving elevator while holding a 5.0 mass suspended from a massless spring with spring constant 1.10. What is the reading of the scale on which the person stands
An object located at the origin and having mass M explodes into three pieces having masses M/4, M/3, and 5M/12. Obtain the velocity components of the third piece
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