) (Problem 2.35 from text) Consider a light wave having a phase velocity of 3x10-8 m/s and a frequency of 6x1014 Hz. What is the shortest distance along the wave between any two points that have a phase difference of 300

The shortest distance covered by the wave between the given points is .

Explanation:

The Phase velocity () of any wave can be written as

where '' is the angular velocity and '' is the wave number.

Also, if '' is the frequency of the wave, then

Given, , and the phase difference between two points is .

If the wave travels by the shortest distance of between these points, then we can write

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.

the temperature in kelvin of 2.0 dm3 of an ideal gas is doubled and its pressure is increased by a factor of four. what is the final volume of the gas