This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: What is the wavelength of an electromagnetic wave that has a frequency of 3 kilohertz? A) less ... (Read 66 times)

chandani

  • Hero Member
  • *****
  • Posts: 541
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


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Li Jun

  • Sr. Member
  • ****
  • Posts: 335
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: C

Answer to Question 2

Answer: B


chandani

  • Member
  • Posts: 541
Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

ryansturges

  • Member
  • Posts: 338
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

Did you know?

Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

The Visible Spectrum of Electromagnetic Energy The Visible Spectrum of Electromagnetic Energy
If y = 0.02 sin (30x - 400t) (SI units), the velocity of the wave is If y = 0.02 sin (30x - 400t) (SI units), the velocity of the wave is
What is the longest wavelength of light that can cause photoelectron emission fr What is the longest wavelength of light that can cause photoelectron emission fr
The relationship between maternal age and the frequency of trisomy 21 (Down syndrome). The risk incr The relationship between maternal age and the frequency of trisomy 21 (Down syndrome). The risk incr
What is the frequency of individuals that are homozygous for this allele? What is the frequency of individuals that are homozygous for this allele?
Current intensity and the frequency of action potentials Current intensity and the frequency of action potentials
Video: Introduction to Heart Attacks

For a complete list of videos, visit our video library