| 1 |
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d |
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The particles collide as the problem says.
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understanding the question.
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7 |
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| 2 |
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e |
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time=distance/speed = 5 m/s
So the building need to be higher.
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time = distance/speed
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7 |
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| 3 |
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b |
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Read from the question.
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7 |
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| 4 |
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c |
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Read from the question.
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7 |
-.50
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| 5 |
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d |
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8*1/2 = 4*2 walls = 8
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read from the question.
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7 |
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| 6 |
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a |
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twice it
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Read from the question.
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7 |
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| 7 |
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e |
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m = momentum p
9m = momentum 9p
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read from the question.
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7 |
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| 8 |
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e |
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solving from the framework of energy, so it will get root 6gh.
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Read from the question.
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7 |
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| 9 |
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e |
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A and B need to be the same because it is connected to the surface and the ball is not moving just rolling so it won't move. So the highest point is Q
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look from the picture.
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7 |
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| 10 |
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e |
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The ways the astronaut throw has less impact on the trash so after it orbits the earth 1 time all trashed will go back to the ISS.
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Kepler's third law
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7 |
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| 11 |
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a |
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The guage pressure is zero so the p1h1g is at the liquid interface then increase to p2h2g so the answer is (p1h1+p2h2)g.
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Read from the question and look at the picture.
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7 |
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| 12 |
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d |
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Read from the question.
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7 |
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| 13 |
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a |
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guess
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Read from the question.
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7 |
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| 14 |
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e |
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The angular velocity is w, so if compare with the below of the cylinder the top will be 2wr so the first plate moving to the right = 2wr and second plate = 2wr faster than the first plate, and the top plate moves to the right = 6wr
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Read from the question.
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7 |
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| 15 |
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a |
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guess
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Read from the question.
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7 |
-.50
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| 16 |
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c |
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Use the relative errors formula. So the new uncertainly = c.
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The relative errors formula.
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| 17 |
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c |
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guess
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Read from the question.
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7 |
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| 18 |
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c |
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guess, 600/4 = 150
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Read from the question.
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7 |
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| 19 |
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a |
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guess
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Read from the question.
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7 |
-.50
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| 20 |
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e |
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guess
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Read from the question.
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7 |
-.50
-.25
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-35%
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