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A ray of red light, for which n=1.54 and a ray of violet light, for which n=1.59, travel during a piece of glass. They meet right at the boundary among the glass and the air, and emerge into the air as one ray with an angle of refraction of 22.5?.
What is the angle among the two rays in the glass?
A uniform plank of length 4.7 m and weight 221 N rests horizontally on two supports, with 1.1 m of plank hanging over the right support. To what distance x can a person who weighs 440 N walk on the overhanging part of the plank before it just begi..
An object starts from the origin and goes along the x-axis to x = 10 m in 2 s, stops for 5.5 s, and then travels at v = -4 m/s for 2.5 s
A Carnot engine operates between the temperatures 420K and 300K, How much heat is discarded to the cold reservoir as this work is done
A spacecraft drifts through space at a constant velocity. Itthen turns on a jet that provides a constant force in the direction perpendicular to the direction of its initial velocity. What is the shape of the trajectory that the space craft follows..
What is new angular speed of the merry-go-round
A small loop of area 6.8mm^2 is placed inside a long solenoidthat has 854 turns/cm and carries a sinusoidally varyingcurrent i of amplitude 1.28A, What is the amplitude of the emf induced in the loop
A roller-coaster vehicle has a mass of 506 kg when fully loaded with passengers, If the vehicle has a speed of 19.0 m/s at point A, what is the force of the track on the vehicle at this point
If the end of the crutch is a circle of radius 1.0 cm without the tip, and the tip is a circle of radius 2.5 cm, by what factor does the tip reduce the pressure
Ultrasound reflected from an oncoming bloodstream that is moving at 22.0 cm/s is mixed with the original frequency of 3.00 MHz to produce beats
a particle is thrown upwards from the ground. it experiences constant air resistance which produces a retardation of 2
The velocity v of a particle moving in the xy plane is given by v = (5.0t -4.0t^2 )i + 4.5j, in m/s. Here v is in m/s and t (for positive time) is in s. What is the acceleration when t = 3.0 s I-component of acceleration and J-component of accelerati..
A drinking straw 20 cm long and 3 mm in diameter stands vertically in a cup of juice 8.0cm in diameter. A section of straw 6.5cm long extends above the juice. A child sucks on the straw, and the level of juice in the glass begins dropping at 0.23c..
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