It is determined that a certain light wave has a wavelength of 3.012 ×10−12 m. The light travels at 2.99 ×108 m/s. What is the frequency of the light wave? (Round your answer to three significant figures.)

Explanation:

Recall that the velocity (v) of a light wave is defined as the product of its frequency (f)  times its wavelength () :

therefore, we can solve for the unknown frequency by dividing both sides of the equation by the frequency:

Since the units "1/second" are what we call Hertz (Hz), the answer can also be given as:

a charge 3q is at the origin, and a charge −2q is on the positive x axis at x=a. part a where on the x-axis would you place a third charge so it would experience no net electric force? enter an expression for the exact answer, which will involve a square-root sign. (do not enter an approximate decimal answer.)

i think if it were me i whould divide 300 dide 15

step-by-step explanation: