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The rhinestones in costume jewellery are glass by index of refraction 1.50. To make them more reflective, they are often coated with a layer of silicon monoxide of index of refraction 2.00. What is the minimum coating thickness required to ensure that light of wavelength 454 nm and of perpendicular incidence will be reflected from the two surfaces of the coating by fully constructive interference?
A uniform ladder of length L and weight w is leaning against a vertical wall. The coefficient of static friction among the ladder and the floor is the same as that among the ladder and the wall. If this coefficient of static friction is µs = 0.510, D..
An asteroid in an elliptical orbit about the sun travels at 1.0*106 m/s at perihelion(the point of closest approach) at a distance of 3.9*108 km from the sun. Howfast is it traveling at aphelion (the most distant point), whichis 8.8*108 km from the s..
define How long are the skid marks. calculate the time it takes the sled to go 21 m down the slope.
An average froghopper insect has a mass of 12.3 mg and reaches a maximum height of 290 mm when its takeoff angle is 58 degrees above the horizontal. Find the takeoff speed of the froghoppper
Given a hollow conducting sphere of radius r and surface charge density σ. Determine the capacitance of the spherical capacitor with an outer shell of radius R and equal and opposite charge to the inner sphere
question in a series rl circuit a 1.2-khz oscillating emf has amplitude epsilonmax 24 v and the current amplitude is
a voltmeter is used to read the potential difference accross the poles of a battery.the battery is rated at 20 v. the
One end of an iron poker is placed in a fire where the temperature is 495°C, and the other end is kept at a temperature of 27°C. The poker is 1.2 m long and has a radius of 5.0 multiplied by 10-3 m. Ignoring the heat lost along the length of the p..
The Hubble Space Telescope orbits Earth 601 km above Earth's surface. What is the period of the telescope's orbit
You are on a ferries wheel. You wonder about the motion of the ride. You calculate the radius of the big wheel to be 15 meter, Find your speed and magnitude of your acceleration
If a vehicle is traveling at velocity v and takes a distance d to stop, then how fast is a vehicle traveling if it takes a distance of 3d to stop. suppose mass and acceleration are equal.
A roller coaster is traveling along a vertical circular loop, How much work is done by the frictional force from Position 1 to Position 2
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