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A transparent material X is submerged in water (n = 1.33). It is observed that a light ray travelling in X at angle of 50o to the normal is totally reflected at the X-water interface. What is the minimum index of refraction of X?
A bob (small ball) is attached to the lower end of a cord that is attached to the cieling and moves in a horizontal circle at a constant speed. (The cord sweeps out a cone as the bob rotates.) The bob has a mass of 0.040 kg, the cord has a length ..
An 8000-kg freight car rolls along rails with negligible friction. The car is brought to rest by a combination of two coiled springs.
A carnival merry-go-round has a large disk-shaped platform of mass 120 kg that can rotate about a center axle. Determine the rotational velocity of the platform
a pendulum is made with a 4 kg mass suspended at the end of a 75 cm thin rod. the pendulum is started at an angle 20
a guitar of bridge length l 0.76m has new strings put on it. the low e string has a linear density of p 0.08 kgm
An electric field is E=(200 N/C) i in the region x>0 and E=( - 200 N/C) i in the region x
q1. an object is 14.4 cm from the surface of a reflective spherical christmas tree ornament 8.04 cm in diameter.what is
Water skiers of tern ride to one side of the center line of a boat. In this case, the ski boat is traveling at 15 m/s and the tension in the rope is 75N. If the boat does 3500J of work on the skier in 50.0m, what is the angle θ among the tow rope a..
A light beam containing red and violet wavelengths is incident on a slab of quartz at an angle of incidence of 35.6°. The index of refraction of quartz is 1.455 at 660 nm (red light), and its index of refraction is 1.468 at 410 nm (violet light). Fin..
a particle of mass m1 moving with a velocity u makes a head-on elastic collision with a particle of mass 2m initially
A cube of side 15 cm floats at the surface between waterand oil. The oil has a density of 810 kg/m3. what is the buoyant force on the cube
On a safari, you are spear fishing while wading in a river. You observe a fish gliding by you. Determine the angle below the horizontal that you should aim your spear gun in order to catch dinner
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