A wave is traveling in the positive x-direction. One graph shows it at n single
ID: 2076044 • Letter: A
Question
A wave is traveling in the positive x-direction. One graph shows it at n single time and the other at a single position. What are the wavelength, frequency and velocity of the wave? Points A, B, and C are in a region of uniform electric field of 10 N/C as shown. (a) If point C is defined to be at an electric potential of 0 volts, what is the electric potential at points A and B? (b) If a particle with a mass of 6 kg and a charge of -3 C is at point C, what is the magnitude and direction of the force on it? (c) If that charge has a velocity of 4 m/sec in the direction of point A, what is its velocity when it passes point A?Explanation / Answer
The markings in graph are not visible clearly, still,
Wavelength is distance moved in one complete cycle,(for graph of wave at single position.
As much is visible to me,w avelength is 20cm.
Same is for graph at same time: time taken for one complete oscillation gives Frequency. So Frequency is 4 Hz.
For velocity, v=f*w.
f is Frequency. w is wavelength. v is velocity.
v= 20*4=80m/sec.