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laiz [17]
3 years ago
6

A sound wave traveling through dry air has a frequency of 15 Hz, a

Physics
2 answers:
Korolek [52]3 years ago
3 0

Answer:

Option B

Explanation:

Speed of a wave is denoted by:

v=fλ

where f is the frequency which is unchanged 15Hz and λ is the new wavelength which is 28m

v=fλ

v=15(28)\\v=420m/s

adell [148]3 years ago
3 0

Answer: b. 420 m/s

Explanation: ap3x

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Discuss one social problem in the world today. What do you think should be done to help solve this social problem?
Lemur [1.5K]

The most common Social Problems are using of drugs, child abuse, crime, corruption and many more problems.

<h3>Discuss Social Problem in the world today. What do you think should be done to help solve this social problem?</h3>

There are many social problems in the world today, but the biggest social problems which very common in our today's society is; unemployment, migration, crime, delinquency, drug abuse, child abuse, crime against women, crime against children, discrimination on the basis of Caste, class & religion , corruption, family and health problems, education, political, economic, cultural and environment issues. The most common social problem which is related with the health is smoking, drinking alcohols, heroin, snuph, theft and many more problems.

We can fix all the above problems by making rules and regulations which should be implement on the peoples.

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5 0
2 years ago
All of the following except ______ were part of RCA. A. Westinghouse B. Columbia Broadcasting System C. United Fruit Company D.
PSYCHO15rus [73]

Answer:

Columbia broadcasting system was never been a part of RCA corporation. The other companies Westinghouse, united fruit company and general electric were remain as part of RCA.

Explanation:

7 0
3 years ago
The global winds and moisture belts indicate that large amounts of rainfall occur at
diamong [38]

it should be rising and converging

3 0
3 years ago
Which of the following best characterizes the field of physics
Sav [38]
Would love to help you but there are no options for me to choose from
7 0
3 years ago
A ray of light is projected into a glass tube that is surrounded by air. The glass has an index of refraction of 1.50 and air ha
Tamiku [17]

Answer:

θ = 41.8º

Explanation:

This is an internal total reflection exercise, the equation that describes this process is

         sin θ = n₂ / n₁

where n₂ is the index of the incident medium and n₁ the other medium must be met n₁> n₂

        θ = sin⁻¹ n₂ / n₁

let's calculate

       θ = sin⁻¹ (1.00 / 1.50)

       θ = 41.8º

4 0
3 years ago
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