Question and answer
Which of the following is not a characteristic of electromagnetic waves? A. They can travel through a vacuum. B. They can be refracted. C. They can travel at various speeds through any one material. D. They can be reflected.
They can travel at various speeds through any one material. -is not a characteristic of electromagnetic waves.
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Expert answered|Score 1|Janet17|Points 38265|
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Asked 10/15/2018 2:07:35 PM
Updated 10/15/2018 9:03:18 PM
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This answer has been confirmed as correct and helpful.
Confirmed by alfred123 [10/15/2018 9:03:18 PM]
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When a sound from a source is refracted away from the surface of the earth, it gives an indication that the? A. wind is blowing in the direction of the sound. B. air is cooler than the ground. C. air has high humidity. D. ground is cooling faster than the air.
Weegy: When a sound from a source is refracted away from the surface of the earth, it gives an indication that the: air is cooler than the ground. (More)
Question
Updated 10/15/2018 1:43:01 PM
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If a wave has a wavelength of 9 meters and a period of 0.006, what is the velocity of the wave? A. 1,285 m/s B. 1,800 m/s C. 1,200 m/s D. 1,500 m/s
Question
Updated 158 days ago|2/25/2021 2:04:09 PM
1 Answer/Comment
If a wave has a wavelength of 9 meters and a period of 0.006, the velocity of the wave is 1500 m/s.
wavelength = wave velocity / frequency
wavelength = c / f
9 = c/(1/ 0.006) ,c = 9 *1/0.006 = 1500 m/s
Added 158 days ago|2/25/2021 2:04:09 PM
This answer has been confirmed as correct and helpful.
If two waves with equal amplitudes and wavelengths travel through a medium in such a way that a particular particle of the medium is at the crest of one wave and at the trough of the other wave at the same time, what will happen to that particle? A. The particle will remain stationary due to interference. B. The particle will vibrate with double amplitude due to resonance. C. The particle will cause beats as a result of the wave combination. D. The particle will move halfway ...
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Not Answered
Updated 346 days ago|8/21/2020 1:51:21 PM
1 Answer/Comment
If two waves with equal amplitudes and wavelengths travel through a medium in such a way that a particular particle of the medium is at the crest of one wave and at the trough of the other wave at the same time, the particle will remain stationary due to interference.
Added 346 days ago|8/21/2020 1:51:21 PM
This answer has been confirmed as correct and helpful.
Which of the following notations would be the appropriate and final way to display the formula for magnesium chloride? A. MgCl B. Mg+2Cl–1 C. MgCl2 D. MGCl2
Weegy: MgCl2 would be the appropriate and final way to display the formula for magnesium chloride. User: An atom of chlorine has several valence electrons in its A. first shell. B. third shell. C. second shell. D. nucleus. Weegy: An atom of chlorine has several valence electrons in its third shell. User: Which of the following accurately describes acids and bases in regard to ionization? A. When free hydrogen ions and free hydroxyl ions are removed from solutions of acids and bases, the acidic and basic properties disappear. B. When an acid and a base are mixed together in the proper proportions, two hydroxyl ions will unite. C. Weak bases dissociate only to a slight degree to produce free hydrogen ions. D. Weak acids dissociate to a great degree. Weegy: When free hydrogen ions and free hydroxyl ions are removed from solutions of acids and bases, the acidic and basic properties disappear. -accurately describes acids and bases in regard to ionization. ] User: A salt is obtained as a reaction between A. a nonmetal and a metal. B. a base and an acid. C. a base and water. D. an acid and oxygen. Weegy: A salt is obtained as a reaction between a base and an acid. User: Which of the following is a characteristic of most non-metals and is not a characteristic of most metals? A. Has a negative charge when a current is run through its solution B. Replaces the hydrogen in acids to form stable compounds C. Is malleable and ductile D. Can conduct electricity and heat (More)
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Not Answered
Updated 269 days ago|11/7/2020 6:34:59 AM
1 Answer/Comment
"Has a negative charge when a current is run through its solution" is a characteristic of most non-metals and is not a characteristic of most metals.

Added 269 days ago|11/7/2020 6:34:59 AM
This answer has been confirmed as correct and helpful.
A class trip was 234 miles away from the school. If the bus driver drove at a constant speed of 70 mph, about how long did the trip take
Question
Not Answered
Updated 279 days ago|10/28/2020 10:06:15 AM
1 Answer/Comment
234 / 70 = 3.34
A class trip was 234 miles away from the school. If the bus driver drove at a constant speed of 70 mph, the trip took 3 hours 34 minutes.
Added 279 days ago|10/28/2020 10:06:15 AM
This answer has been confirmed as correct and helpful.
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