Physics Helpppp

posted by .

Q11
a(ii)A sinusoidal carrier wave has frequency 500 kHz and amplitude 6.0 V. It is to be
frequency modulated by a sinusoidal wave of frequency 8 kHz and amplitude 1.5 V.
The frequency deviation of the carrier wave is 20 kHz V^–1

Describe, for the carrier wave, the variation (if any) of
1. the amplitude,

2. the frequency.

Answer:
1. Amplitude does not vary (I got this)
2. Upper limit 530kHz (I assume they got this by using 20kHz/V x 1.5V??)
Lower limit 470kHz
Changes from lower to higer and to lower limit at 8000 per second (I'm not sure how they got 8000/s??)

Please help?
Thankkkkkks :)

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics (please help)

    A sinusoidal wave travels along a string. The time for a particle to move from maximum displacement to zero is 0.170s. What are the a)period b)frequency c) the wavelength is 1.40m what is the wave speed?
  2. physics

    The air pressure variations in a sound wave cause the eardrum to vibrate. Find the maximum velocity and acceleration of the eardrum for vibrations of amplitude 1.5 10-8 m at a frequency of 19.0 Hz.Repeat (b) for the same amplitude …
  3. Algebra 2

    The frequency of a radio wave is inversely proportional to the wavelength. If a wave 250 m long has a frequency of about 1200 kHz, what is the approximate length of a wave with a frequency of 800 kHz?
  4. PHYSICS

    A bat flies toward a wall at a speed of 3.5 m/s. As it flies, the bat emits an ultrasonic sound wave with frequency 30.5 kHz. What frequency does the bat hear in the reflected wave?
  5. Physics

    A sinusoidal wave traveling on a string is moving in the positive x-direction. The wave has a wavelength of 8 m, a frequency of 60 Hz, and an amplitude of 9 cm. What is the wave function for this wave?
  6. Physics

    The sinusoidal waveform can be varied by using which of the following parameters?
  7. Physics: Wave Motion

    A vibrator in a ripple tank vibrates with a frequency of 3.0 Hz and an amplitude of 2.5 cm. The resulting waves travel away from the source with a speed of 2.5 cm/s, passing under various markers floating on the water. (a)In what direction(s) …
  8. Physics:Wave Motion

    A vibrator in a ripple tank vibrates with a frequency of 3.0 Hz and an amplitude of 2.5 cm. The resulting waves travel away from the source with a speed of 2.5 cm/s, passing under various markers floating on the water. (a)In what direction(s) …
  9. Physics

    The period of longitudinal sinusoidal wave is 0.16 seconds and its wavelength is 8.0 meters. Calculate the wave's speed, frequency, angular frequency and wave number.
  10. Physics

    A transverse wave 1.1cm in amplitude is propagating on a string; the wave frequency is 44 Hz. The string is under 23-N tension and has mass per unit length of 16g/m . What is the wave speed?

More Similar Questions