Find the wave length of light with frequency of 2x1020 Hz. What is the traveling speed for this light to travel in a medium with the index of refraction to be equal to 1.5?

One carpenter builds 1/5 of a house in 3/4 of a day and the other builds 2/5 of a house in the same amount of time. How many houses do the two carpenters build in total per day?

How many newtons of force would 200 grams apply? What would be the mass of an object that weights 7 N on earth? If an object weights 450 N. How much does it weight in pounds?

Which of the following describes a strong base? A. A strong base fully dissociates. B. A strong base does not dissociate. C. A strong base contains OH + ions. D. A strong base partially dissociates.

Which describes the relationship between the frequency wavelength, and speed of a wave as the wave travels through different media? e non hanne wavelength channes and francu romaine constant

Difference between gravitation and gravitational force

A 160 kilogram cannon fires a 30 kilogram cannonball with a speed of 45 m/s at an angle of 30 degrees with the horizontal. In what direction and at what speed does the cannon recoil?

A student uses an indicator to measure the pH of a solution. The indicator shows a pH of 7. What must be true of this solution? The solution contains neither hydronium ions nor hydroxide ions.

What is the purpose of a valve?

A particle travels 15 times around a 10-cm radius circle in 42 seconds. what is the average speed (in m/s) of the particle?

Where are the magnetic fields stronger near a bar magnet? A) Top B) Center C) Ends D) Bottom