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Author Question: What is the wavelength of an electromagnetic wave that has a frequency of 3 kilohertz? A) less ... (Read 62 times)

chandani

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on: Jul 29, 2018
What is the wavelength of an electromagnetic wave that has a frequency of 3 kilohertz?
 
  A) less than 1 km
  B) 1 km
  C) more than 1 km

Question 2

Which best shields you from sunburn when at the beach?
 
  A) a cloudy day
  B) a sheet of glass between you and the Sun
  C) frequent turning of your body
  D) all of the above
  E) none of the above


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Li Jun

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: C

Answer to Question 2

Answer: B


chandani

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Reply 2 on: Jul 29, 2018
Gracias!

xiaomengxian

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Reply 3 on: Yesterday
:D TYSM

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