Julia performs an experiment to measure the wavelength of four different waves and records her data in the table below.
2 answers:
Explanation :
The amplitude of the wave illustrates the energy of the wave. The energy of the depends on the amplitude and the frequency of the wave.
The maximum distance covered by the wave is called its amplitude. The topmost point on the wave is called its crest and the down most point is called its trough (as shown in the attached figure).
From the given data, the wave having the amplitude of 3 cm has the least energy while the wave having an amplitude of 12 cm have maximum energy.
So, the correct order of the wave from the lowest energy to the highest energy is :
1 < 4 < 2 < 3
Hence, this is the required solution.
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- Time=t=2.5s
Answer:
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Explanation:
Answer:
The surface gravity g of the planet is 1/4 of the surface gravity on earth.
Explanation:
Surface gravity is given by the following formula:
So the gravity of both the earth and the planet is written in terms of their own radius, so we get:
The problem tells us the radius of the planet is twice that of the radius on earth, so:
If we substituted that into the gravity of the planet equation we would end up with the following formula:
Which yields:
So we can now compare the two gravities:
When simplifying the ratio we end up with:
So the gravity acceleration on the surface of the planet is 1/4 of that on the surface of Earth.