Reference no: EM131127154
To put into context, the project objective was to have sketches of the moon (phase, horizon, etc.) for two weeks straight, every night at the exact same time. The following are questions that are to be answered after the sketch part of the project (which has already been completed):
1. Why does the amount of the moon that is lit up change from night to night?
2. Why must your observations be made at the same time every day for this project to work?
3. Why couldn't we continue this project in the same way for a full lunar cycle?
4. Explain the main reason why the position of the moon in the sky changes over the course of a single night. In other words why is the moon in a different position in the sky at 11:00 than it was as 9:00?
5. Explain why the position of the moon in the sky changes from night to night, so that at 9:00 tomorrow it will be at a different position in the sky than it was at 9:00 today.
6. When the moon is in the first quarter phase, half of it is lit up and half is in shadow. What object casts this shadow? In other words, what object blocks the light, leaving half of the moon in shadow? Carefully explain your answer.
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A dc motor control system with unity feedback
: A DC motor control system with unity feedback has the form shown in Figure AP10.4. Select K1 and K2 so that the system response has a settling time (with a 2% criterion) less than 1 second and an overshoot less than 5% for a step input.
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What is the torino scale for asteroids
: What is the Torino Scale for asteroids? In this context, what is significant about the orbit of the asteroid Apophis
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Design a lead compensator
: A unity feedback system is shown in Figure AP10.5. We want the step response of the system to have an overshoot of about 10% and a settling time (with a 2% criterion) of about 4 seconds.
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What is the most essential source of bargaining strategy
: Provide an example of how each is effectively used in a negotiating situation. Define the terms power and leverage and what is the most essential source of bargaining strategy in any negotiation process.
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Why the position of the moon in the sky changes
: Explain the main reason why the position of the moon in the sky changes over the course of a single night. In other words why is the moon in a different position in the sky at 11:00 than it was as 9:00
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Wish to minimize the settling time of the system
: Consider again Example 10.12 when we wish to minimize the settling time of the system while requiring that K
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How far must you be from the speaker to reduce the sound
: You are 16.0 m from a loudspeaker, where you hear a sound intensity I0. How far must you be from the speaker to reduce the sound intensity that you hear by a factor of 5? (Hint: Assume spherical waves.)
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Determine the overshoot and rise time
: (a) Determine the overshoot and rise time for Gp(s) = 1 and for p = 3. (b) Select an appropriate value for p that will give an overshoot of 1 % and compare the results.
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Arm length resulting in a challenging control problem
: The Manutec robot has large inertia and arm length resulting in a challenging control problem, as shown in Figure AP10.8 (a). The block diagram model of the system is shown in Figure AP10.8 (b).The plant dynamics are represented by
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