3 years ago

Poverty and backwardness are also considered as the cause of rapid population growth. Why????

1 answer:

6 0

because poor and people of back places may not have enough knowledge about contraceptive devices and may not have enough money to buy it.That's why poverty and backwardness are considered to be a cause of population growth

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Answer:

2.4564 m/s

Explanation:

Number of waves in 1 second

$\dfrac{12}{45}=0.267\ Hz$

This is the frequency 0.267 Hz

The distance mentioned in the question is the

$\lambda$ = Wavelength = 9.2 m

The speed of wave is

$v=f\lambda$

$\Rightarrow v=0.267\times 9.2$

$\Rightarrow v=2.4564\ m/s$

The speed of the wave is 2.4564 m/s

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