posted by .

(a) Two microwave frequencies are authorized for use in microwave ovens: 900 and 2560 MHz. Calculate the wavelength of each.
1 cm (frequency = 900 MHz)
2 cm (frequency = 2560 MHz)
(b) Which frequency would produce smaller hot spots in foods due to interference effects?
3 MHz

  • physics -

    λ1=c/f1 =3•10^8/900•10^6 =0.33 m =33 cm.
    λ2=c/f2 = 3•10^8/2560•10^6 =0.12 m =12 cm
    (b) 2560 MHz

  • physics -

    12 didn't work

  • physics -

    oh its 11.7! got it
    thank you!

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Science

    Does increasing the frequency of a wave also increase its wavelength?
  2. physics

    waves on the surface of a liquid are observed to have a wavelength of 12.9 mm and a speed of 30.9 cm/s. the frequency of the wave motion is: a. 1.8 mHz b. 24 Hz c. 42 mHz d. 2.4 Hz e. 2.4 mHz how do i know which label to use (mHz or …
  3. Physics

    A radio station broadcasting on a frequency of 106 MHz is received by an astronaut headed toward the station at a speed 4.0×107 m/s. To what frequency must the astronaut's radio be tuned?
  4. chemistry please help

    The FM band of radio waves are measured in megahertz (MHz), which are the numbers you see on the radio dial. Therefore, a radio station at 102.5 on the FM dial has a frequency of 102.5 MHz or 102,500,000 Hz. What is the wavelength …
  5. chemistry

    Calculate the energy of a photon of electromagnetic radiation at each of the following frequencies. (A) 103.1 MHz (typical frequency for FM radio broadcasting) (B) 1015 kHz (typical frequency for AM radio broadcasting) (assume four …
  6. physics

    Citizen's band (CB) radio utilizes frequencies between commercial AM and FM. What is the frequency of a 11.34 m wavelength CB channel?
  7. Physics

    How long is one-quarter wavelength at each of the frequency of 1 MHz, 10 MHz, 2.8 MHz, 54 MHz?
  8. Chemistry

    Calculate the energy of a photon of frequency 35.0 MHz (MHz is a mega hertz or 1 x 106Hz).
  9. Physics 2

    1.) The microwave protion of the spectrum has wavelengths ranging from 1 mm to 1 m. find the corresponding frequency?
  10. Chemistry

    A sample of light has a wavelength of 2.61 x 10^-12 m. What is it's frequency?

More Similar Questions