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A glass plate having parallel faces and a refractive index of 1.54 lies at the bottom of a liquid of refractive index 1.62. A ray of light in the liquid strikes the top of the glass at an angle of incidence of 42.0 degrees.
Compute the angle of refraction of this light in the glass.
___ degrees
What is the net upward force on an airplane wing of area 20.0 m2 if the speed of air flow is 221 m/s across the top of the wing and 206 m/s across the bottom
The speed of sound in air at room temperature is 339 m/s. What is the frequency of a sound wave in air with wavelength 1.0 m
A photoflash unit makes a very bright light for a very short time, Which is important: the intensity of the light, or the product of the intensity and the time of the flash
A charge of 0.040C moves vertically in a field of 0.075T that is oriented 45? from the vertical. What speed must the charge have such that the force acting on it is 8.0N
The froghopper, Philaenus spumarius, holds the world record for insect jumps. What horizontal distance did the froghopper cover for this world-record leap
find the velocity of their center of mass before the collision.
A 599 Hz sound wave travels through a substance. What is the speed of sound in the substance
A cubic meter of some material has a mass of 8000 kg. Find the buoyant force on the block and the tension in the cable
A 0.410-kg ball is dropped from rest at a point 4.30 m above the floor. what is the impulse of the net force applied to the ball during the collision with the floor
A ranger in a national park is driving at 28.0 mi/h when a deer jumps into the road 225 ft ahead of the vehicle. After a reaction time t, the ranger applies the brakes to produce an acceleration of a = -9.00 ft/s2. What is the most reaction time a..
A racquet ball with mass m = 0.237 kg is moving toward the wall at v = 12 m/s and at an angle of ? = 30° with respect to the horizontal. What is the change in kinetic energy of the racquet ball
a satellite of a distant planet has a period of revolution around the planet of 3.89*10^5 seconds, determine the centripetal acceleration of the satellite
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