10. Which of the following correctly describes a gamma ray?

Question

A. long wavelength and low frequency
B. long wavelength and high frequency
C. short wavelength in low frecuency
D. short wavelength and high frequency

11. Which of the following is true about all electromagnetic waves in a vacuum?
A. They all carry the same energy.
B. They all travle at the same speed
C. they all have the same frequency
D. they all have the same wavelength

13. FM signals travel as changes in
A. speed of the wave
B. the amplitude of the wave
C. the frequency
D. loudness of the wave
-The frequency?????-

14. What is the principle role of a tower within a cellur system?
A. To track data usage
B. transmit sygnals
C. pinpoint locations
D. to reduce line noise

Answer 1

What do you think?

Answer 2

10. B
11. I have no clue
13. B or C
14. B

Answer 3

NO ! short wavelengths are high frequency !!!!
distance = speed * time
time period = 1/f
so
wavelength = speed / frequency
speed of light is about 3*10^8 around here
so
wavelength = 3*10^8 / frequency
so Short wavelength is HIGH frequency !!~

Answer 4

11. I already told you c = 3*10^8 m/s