All AP Physics 2 Resources
Example Question #1 : Representing Waves As Sine And Cosine Functions
Which of the following electromagnetic waves has the highest frequency?
The frequency of a wave is directly related to the energy in the wave. The most energetic waves in the electromagnetic spectrum are gamma rays. Gamma rays are typically released from quasars, ultra-dense dying stars, and from atomic bomb blasts, which gives you the scope of the amount of energy involved with gamma rays.
Example Question #2 : Representing Waves As Sine And Cosine Functions
For open pipes, the formula for wave patterns at any given time can be given by a Fourier Sine Series which is given as the infinite sum:
when is an integer, and is the length of the pipe. Each individual value of is called a harmonic.
What is the angular frequency of the second harmonic?
Frequency, when given an equation in sine or cosine notation, is the value inside the parenthesis. For the second harmonic , the frequency is:
Example Question #3 : Representing Waves As Sine And Cosine Functions
Equation of sound wave 1:
Equation of sound wave 2:
Determine at what time there will be complete constructive interference between the two if:
None of these
The will be destructive interference when
Plugging in values: