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Consider a common mirage formed by super-heated air just above a roadway. A truck driver whose eyes are 2.00 m above the road, where n = 1.0005 looks forward. She perceives the illusion of a patch of water ahead on the road, where her line of sight makes an angle of 1.15° below the horizontal. Find the index of refraction of the air just above the road surface. (Treat this as a problem in total internal reflection. Give your answer to 5 decimal places.)
Two astronauts are, 3.18 m apart in their spaceship, speaking to each other. How far away from the Earth is the spaceship?
The density of ice is 917 kg/m^3, and the density of sea water is 1025 kg/m^3. A swimming polar bear climbs onto a piece of floating ice that has a volume of 5.2m^3. What is the weight of the heaviest bear that the ice can support without sinking com..
A 2.90 H coil with a resistance of 6.41×101 ? is in series with a 1.14×103 ? resistor. What is the peak value of the potential difference across the coil
Consider the reaction, (2/1)H + (9/4)Be>>>> (7/3)Li + (4/2)He How much energy is liberated? What is the threshold energy for this reaction
Two Carts have a perfectly inelastic collision. Cart A has mass 34.8 kg and velocity 5.08 m/s directed north immediately before the collision. What is the speed of the two carts
Consider a frictionless track. A block of mass m1=10.0kg is released from A, at a height h=17.0m. It makes a head-on elastic collision at B with a block of mass m2=22.0kg that is initially at rest. Calculate the maximum height to which m1 rises after..
The Sun is a low mass star and so would never have the core fusion reactions of massive stars. Yet, the Sun has iron in its atmosphere, as well as gold, silver and other elements much heavier than iron and why?
Find out the magnetic field strength
A charge of 6.0 mC is placed at each corner of a square 0.100mon each side. Determine the magnitude and direction of the force on each charge
a 4400 kg open railroad car coasts along with a constant speed of 5.30ms on a level track. snow begins to fall
An 6.70-cm-diameter, 300g sphere is released from rest at the top of a 1.60-m-long, 19.0 degree incline. What is the sphere's angular velocity at the bottom of the incline
A playground merry-go-round of radiusR=2.00m has a moment of inertiaI=255kg·m2and is rotating at9.0rev/min about a frictionless vertical axle. What is the new angular speed of the merry-go-round
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