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A source of green laser light has a wavelength of 560nm, what is its frequency? Give your answer to an appropriate number of significant figures and using the correct units.

1.) using the wave speed formula for an electromagnetic wave, c=fλ, (c=3.00x10^8 m/s) f=c/λ where c=the speed of an electromagnetic wave. f=(3.00x10^8)/(560x10^-9)= 5.36x10^14 Hz
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Answered by Joel E. • Physics tutor
3393 Views

how do i convert from a sine angle to a cosine angle?

the phase difference between sine and cosine graphs is pi/2. so when the sine function is applied to an angle, to get the corresponding answer but from a cosine function you simply add pi/2 (Radians only, fo...
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3732 Views

what is the scape velocity?

It is the velocity necessary for a body to get rid of the gravitational attraction.
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Answered by Pablo A. • Physics tutor
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What are vectors?

Vectors can seem complicated at first but they are simple once you understand that you need two pieces of information in order to define a vector. A vector is composed of direction and magnitude. You can thi...
EC
Answered by Esperanza C. • Physics tutor
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If a ball of mass 5kg is dropped from rest, how far will it travel in the 3 seconds after it reaches 150m from it's original position? Write down the change in it's total energy after the 3 seconds. (ignoring air resistance)

Calculate the speed the ball is travelling at when it reaches 150m using v 2 = u 2 + 2ax. 2) Calculate the distance travelled in 3 seconds by an object with a speed of that found in 1) and an acceleration of...
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Answered by Dafydd O. • Physics tutor
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