What are electromagnetic waves? what are its characteristics? how do we classify them?

For a certain optical medium the speed of light varies from a low value of 1.80 * 10 8 m/s for violet light to a high value of 1.92 * 10 8 m/s for red light. Calculate the range of the index of refraction n of the material for visible light.

How do dolphins communicate with each other

The velocity of particle is given by v = √180-√16x m/s. Its acceleration will be

Question: Give the chemical formulas for the following compounds. 1A) aluminum oxide 1B) sulfur hexafluoride Write the formula for another compound that has the following: 2) Contains a metal and oxygen

The kinetic energy of a car of mass 180kg moving at a constant velocity is 4410J. What is its velocity?

How does the brightness of a bulb tell you about the energy of electrons passing through it?

Why do you think sound travels faster in steel than it does in wood? (Hint: Think about the densities of the two materials, and how the particles might be arranged.)

On which body would a 100kg man have the least gravitational potential energy when lifted to a height of 3 meters

Which of the following factors can negatively affect development? a. Political corruption and instability b. Lack of resources c. Lack of education d. All of the above

A golf ball is hit with an initial velocity of 155 ft/s at an angle of 23 degrees with the horizontal. After 1.4 seconds, how far has the golf ball traveled horizontally and vertically?. a. 199.7 feet horizontally and 75.2 feet vertically. b. 60.