Which statement about elements and atoms is true?
1 answer:
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Answer:
1. M = 67,422,800,892,977.54 kg
2. r = 15 km
Explanation:
The diameter of the Comet Tempel 1, D = 9.0 km across
The speed with which the dust escapes = 1.0 m/s
1. The escape velocity, , is given by the following formula
Where;
G = The universal gravitational constant = 6.67430 × 10⁻¹¹ N·m²/kg²
= The escape velocity of the debris = 1.0 m/s
M = The mass of the comet from where the debris escapes
From the escape velocity equation, we have;
Plugging in the values for the variables, we get the mass of the comet, 'M', as follows;
The mass of the comet, M ≈ 67,422,800,892,977.54 kg
2. When the debris has lost 60% of its initial kinetic energy, we have;
When the debris has lost 60% of its initial kinetic energy, the distance the debris will be from the comet's center, r = 15,000 m = 15 km
The only possible explanation is that the frequency of the emitted wave has changed.
In fact, wavelength
is related to the frequency f by:
where v is the speed of the wave. If v is constant and the wavelength has changed, then it means that f, the frequency, has also changed.
In fact, wavelength
where v is the speed of the wave. If v is constant and the wavelength has changed, then it means that f, the frequency, has also changed.