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liq [111]
3 years ago
5

Which of the following statements about electromagnetic and mechanical wa

Social Studies
1 answer:
densk [106]3 years ago
4 0

Answer:

Statement that is true about electromagnetic and mechanical waves is:

Option B: Mechanical waves must travel through a medium, but electromagnetic waves do not require a medium to travel.

Explanation:

'Electromagnetic' waves do not need any medium to travel whereas 'mechanical waves' need a medium or matter for transmission. Electromagnetic waves are produced by the 'vibrations' of the charged particles. They can even travel in vacuum.  

On the contrary, mechanical waves are caused by the 'wave amplitude'. Mechanical wave can travel in solid, liquid and gas and are considered to be periodic disturbance.

Thus, Option B is the most statement apt explaining the difference between electromagnetic and mechanical waves.

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<h3>What is ppd?</h3>

Postpartum depression (commonly known as PPD) is a medical disorder that many women experience after giving birth. Strong feelings of melancholy, anxiety (concern), and exhaustion persist for a long period after giving delivery. These emotions can make it difficult for you to care for yourself and your infant.

PPD is a complicated mix of physical, mental, and behavioural changes that occur in some women after having birth. PPD is a type of serious depression that occurs within 4 weeks following birth, according to the DSM-5, a guidebook used to identify mental disorders.

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What is the main purpose of federalism and why did the framers of the constitution adopt it?
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To balance the powers between federal state and local governments.
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victus00 [196]

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Is it a multiply question answer or what ?

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Sixty-five-year-old Maggie has joined an exercise program and is trying to keep a positive outlook since her diagnosis of arthri
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b. intraindividual factors.

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According to my research on studies conducted by psychologists, I can say that based on the information provided within the question these activities are part of intraindividual factors. These are factors that occur within an individual usually as part of changes in performance due to cognitive tasks. This can be said because the exercise program is helping her keep a positive outlook within her mind.

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