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Refraction is caused by the fact that
the angle of incidence is greater than the critical angle.a given medium has different speeds of light for differentwavelengths.a given medium has different indices of refraction fordifferent angles of incidence.different media have different speeds of light.
The intensity of an electromagnetic wave is 8 × 107 W/m2. What is the amplitude of the magnetic field of this wave
Andy (mass 77kg ) uses a 2.7m -long rope to pull Bob (mass 61kg ) across the floor (μk=0.20) at a constant speed of 1.0m/s. What is the mass of the rope
a 20 kg mass sits on an inclined plane with friction making an angle of 50 degrees with respect to the horizontal. calculate the frictional force required to keep the mass from sliding down the incline
q1. what is the electric field strength at the point in space where a proton m1.67x10 -27 kg experiences an
An iron casting containing a number of cavities weighs 16967.7 N in air and 13515.2 N in water. What is the total volume of all the cavities in the casting
The car that hits a concrete barrier and takes 0.3 seconds to stop.
A 100-kg object moves on a level surface with a coefficient of friction of 0.40. If the initial velocity is 15 m/s, how long will it take for it to come to rest
Assuming the diver has inhaled a negligible amount of air from the tank, what is the temperature of the ocean water.
visible light of wavelength 480 nm is incident on a diffraction grating with a slit spacing of 0.003 nm. how many
An object is placed directly between a large planet and a star. Find the distance from the planet for which the net gravitational force exerted by the planet
A spring, with a force constant 5.00x10^2 n/m, is horizontal with one end fixed to a wall and the other end free. How far will the block travel once the spring is released
The E' is an unstable particle, with a mean lifetime on 2.5x10^-10s. What is the minimum uncertainty in this particles energy
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