The first formant of your vocal system can be modeled as the resonance of an open-closed tube, the closed end being your vocal c
ords and the open end your lips. Estimate the frequency of the first formant from the graph in (Figure 1).
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Answer: The small spherical planet called "Glob" has a mass of 7.88×1018 kg and a radius of 6.32×104 m. An astronaut on the surface of Glob throws a rock straight up. The rock reaches a maximum height of 1.44×103 m, above the surface of the planet, before it falls back down.
1) the initial speed of the rock as it left the astronaut's hand is 19.46 m/s.
2) A 36.0 kg satellite is in a circular orbit with a radius of 1.45×105 m around the planet Glob. Then the speed of the satellite is 3.624km/s.
Explanation: To find the answer, we need to know about the different equations of planetary motion.
<h3>How to find the initial speed of the rock as it left the astronaut's hand?</h3>- We have the expression for the initial velocity as,
- Thus, to find v, we have to find the acceleration due to gravity of glob. For this, we have,
- Now, the velocity will become,
- As we know that, by equating both centripetal force and the gravitational force, we get the equation of speed of a satellite as,
Thus, we can conclude that,
1) the initial speed of the rock as it left the astronaut's hand is 19.46 m/s.
2) A 36.0 kg satellite is in a circular orbit with a radius of 1.45×105 m around the planet Glob. Then the speed of the satellite is 3.624km/s.
Learn more about the equations of planetary motion here:
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