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Masja [62]
3 years ago
13

In the case of mechanical waves, what causes or determines the speed of the waves, the frequency of the waves, and the wavelengt

hs of the waves?
Physics
2 answers:
lilavasa [31]3 years ago
6 0

Answer:

The medium determines the speed of the wave, the wavelength and frequency.

Explanation:For different media the speed of the wave will variate, because each media have different properties. The following equation makes a relation between the speed of the wave, the wavelength and the frequency:

v = \lambda.\nu (1)

Where v is the speed of the wave, \lambda is the wavelength and \nu is the frequency

Equation 1 shows that the speed of the wave is directly proportional to the product of the wavelength and the frequency. If the speed is lower the wavelength will decrease but the frequency increase, as is shown in equation 2:

\lambda = \frac{v}{\nu}   (2)

Equation 1 can be rewritten for the case of the frequency:

\nu = \frac{v}{\lambda}     (3)

So, according with equation 3, if the speed is higher the frequency will increase but the wavelength will decrease (inversely proportional).

Levart [38]3 years ago
3 0
The rate in witch ditermans the speed or vibration of the movment under the waves witch couses vibrational freequencys to be disrupted.
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Explanation:

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In what way are gravitational and electrical forces similar?
Nadusha1986 [10]

Answer:

D. Both occur between objects independently whether they are in contact  or not.

Explanation:

- The gravitational force is a force that is exerted between two (or more) objects having mass. This force is always attractive and its magnitude is given by

F=G\frac{m_1 m_2}{r^2}

where G is the gravitational constant, m1 and m2 are the two masses, and r is the distance between the two masses.

- The electrical force is a force that is exerted between two (or more) objects having electrical charge. It can be either attractive or repulsive, depending on the sign of the two charges, and its magnitude is given by

F=k\frac{q_1 q_2}{r^2}

where k is the Coulomb's constant, q1 and q2 are the two charges, and r the distance between the two charges.

Looking at both formulas, we see that the two forces are present even when the two objects are not in contact with each other (in fact, r can assume any value in the formula). They are said to be non-contact forces. Therefore, the correct option is

D. Both occur between objects independently whether they are in contact  or not.

6 0
3 years ago
What is 0.0025 m^2 in cm^2? 1m = 100cm.
PSYCHO15rus [73]

Answer:

25 cm²

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Meters and centimeters are both the units for measuring length. The SI unit of measuring length is meters.

Area is the quantity which measures the cross-section occupied by the object.

Thus,

Given that = Area = 0.0025 m²

To convert into cm²

1 m = 100 cm

So, 1 m² = 10000 cm²

So,

<u>Area = 0.0025 × 10000 cm² = 25 cm²</u>

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