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27 March, 01:14

Electromagnetic waves vary in

a. the speed they travel in a vacuum.

b. wavelength and frequency.

c. the way they reflect.

d. the orientation of their electric and magnetic fields.

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Answers (2)
  1. 27 March, 04:26
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    I think the answer is D. the orientation of their electric and magnetic fields
  2. 27 March, 05:05
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    A person's risk of sunburn on a certain body part is greater the more directly the Sun's rays hit that body part. If a person is walking outside with the Sun directly overhead, what body part has the greatest risk for sunburn? (Assume that none of the body parts mentioned below are covered by a hat or hair or anything.)
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