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The smallness of the critical angle ?c for diamond means that light is easily "trapped" within a diamond and eventually emerges from the many cut faces. This makes a diamond more brilliant than stones with smaller n and larger ?c. Traveling inside a diamond, a light ray is incident on the interface between diamond and air. What is the critical angle for total internal reflection? The refraction index for diamondis 2.24.
It is claimed that if a lead bullet goes fast enough, it can melt completely when it comes to a halt suddenly, Find the minimum speed of a lead bullet
A battery has an emf and an internal resistance . When the battery is connected to a 25 ohm resistor, the current through the battery is 0.65 A. Find the battery's internal resistance
A 20 kg satellite has a circular orbit with a period of 2.4 h and a radius of 8.0 Ã- 106 m around a planet of unknown mass. what is the radius of the planet
The angle of incidence of a light beam in air onto a reflecting surface is continuously variable. What is the index of refraction of the reflecting material
A 100000 liter water tower is to be drained. The pump can pull water out of the tank through a circular opening in the tank at a velocity of 10 meters per second
A uniform rod of mass M and length L is sitting on a frictionless table. Describe the subsequent motion of the rod
A seagull flies with a velocity of 12.5 m/s straight into the wind. (ie.. this the velocity of the gull relative to the wind), Calculate the speed of the wind
Two Satellites A and B, each of mass 50 kg are in circular orbits at altitudes of 1000 km and 35000 km respectively. What is the difference in gravitational potential energies of the two satellites in their respective orbits
q1. under the influence of its drive force a snowmobile is moving at a constant velocity along a horizontal patch of
A 3.50-kg ball, moving to the right at a velocity of +2.72 m/s on a frictionless table, Find the magnitude and direction of the final velocity of the two balls if the collision is completely inelastic
Studies of the relationship of the sun to our Galaxy- The Milky Way - Have revealed that the sun is located near the outer edge of the galatic disc, what is the period of the sun's galactic motion
Two objects attract each other gravitationally with a force of 2.5 x10-10 N while they are 0.33 m apart. Their total mass is 4-kg. Find out their individual masses.
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