Physics, 22.08.2019 18:30 amanda1717
To see if this acceleration can be reached by the actual system, the engineers in the video conduct an experiment using a scale model of the glider system. in the scale model, they launch a piece of wood covered in fabric from a height of about 30 feet, using a bathtub full of water as the counterweight the result of this test shows that they did not reach the acceleration they had hoped for. now the engineers are faced with a problem: they must find a new way to launch the glider so that they can reach the desired speed and accelera- tion. they are forced to revise both the parameters of the experiment and their mathematical models. questions 3. is it possible for the bathtub to accelerate at 1.2g? explain why or why not. if it is not possible, how could you modify the system to generate this acceleration? 4. why would they use a scaled-down model to test their ideas? what are the benefits of this approach? what are the limitations of this model?
Answers: 2
Physics, 22.06.2019 18:00
Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.
Answers: 1
Physics, 22.06.2019 18:00
According to newton’s law of universal gravitation, which statements are true? as we move to higher altitudes, the force of gravity on us decreases. as we move to higher altitudes, the force of gravity on us increases. as we gain mass, the force of gravity on us decreases. as we gain mass, the force of gravity on us increases. as we move faster, the force of gravity on us increases.
Answers: 2
Physics, 22.06.2019 21:50
Which of the following is part of the explanation or description of electromagnetic waves? (select all that apply) a. electrically charged molecules in a medium transfer their energy to nearby electrically charged molecules. b. a changing electric field causes a changing magnetic field. c. magnetic molecules in a medium transfer their energy to nearby magnetic molecules. d. a changing magnetic field causes a changing electric field.
Answers: 3
To see if this acceleration can be reached by the actual system, the engineers in the video conduct...
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