24. Which determines the frequency of a sound wave?
2 answers:
Answer:
Speed and wave length.
Explanation:
The frequency of a sound wave is also what we would call the pitch, a really fast and short wave lenght will create a high pitch, while a really slow and long wave length would create a low pitch in the sound wave. The formula for frequency is given by the next formula:
As you can see from the formula, it is velocity and wave length that determine the frequency of a soundwave.
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Explanation:
Mass of the astronaut, m₁ = 170 kg
Speed of astronaut, v₁ = 2.25 m/s
mass of space capsule, m₂ = 2600 kg
Let v₂ is the speed of the space capsule. It can be calculated using the conservation of momentum as :
initial momentum = final momentum
Since, initial momentum is zero. So,
So, the change in speed of the space capsule is 0.17 m/s. Hence, this is the required solution.