Answer:
Climate change can melt ice in cold regions, and because ice is freshwater it can change the salinity of the oceans. Some marine animals may not cope with these conditions and may die as a result. This threatens biodiversity because there would be less species of marine life in our oceans.
Answer:
The average speed is 60 miles per hour or 1 mile per minute.
Explanation:
If you multiply 30 by 2 to find the miles per hour, you also have to multiply 30 miles by 2. This results in 60 miles per hour. If you want to find the miles per minute, you divide the 30 minutes by 30. You have to do the same to the miles, so the average speed could also be 1 mile per minute.
The frequency of the wave is 0.196 Hz
<h3>Speed of a wave</h3>
The speed of a wave is given by v = fλ where
- f = frequency and
- λ = wavelength
<h3>Frequency of the wave</h3>
Making f subject of the formula, we have
f = v/λ
Since
- v = speed of wave = 4.5 km/s = 4.5 × 10³ m/s and
- λ = wavelength = 2.3 × 10⁴ m.
Substituting the values pof the variables into the equation, we have
f = v/λ
f = 4.5 × 10³ m/s ÷ 2.3 × 10⁴ m.
f = 1.957 × 10⁻¹ Hz
f = 0.1957 Hz
f ≅ 0.196 Hz
So, the frequency of the wave is 0.196 Hz
Learn more about frequency of a wave here:
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