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WARRIOR [948]
3 years ago
7

You lift a 10-N physics book up in the air a distance of 1.0 m, at a constant velocity

Physics
1 answer:
Anarel [89]3 years ago
5 0

The book is lifted upward, but gravity points down, so the work done by gravity must be negative (so you can eliminate options 1 and 3).

The force exerted on the book by gravity has magnitude

<em>F</em> = <em>mg</em> = (10 N) (9.80 m/s^2) = 9.8 N ≈ 10 N

You raise the book 1.0 m in the opposite direction, so the work done is

<em>W</em> = (10 N) (-1.0 m) = -10 J

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C. Is the correct answer
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5 0
3 years ago
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The table represents the speed of a car in a northern direction over several seconds. A 2-column table with 5 rows. The first co
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Answer:

Column 1 should be titled “Time,” and Column 2 should be titled

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Explanation:

* <em>Lets revise some definitions of graphs</em>

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Velocity-time graph is called speed-time graph.

The vertical axis of a velocity-time graph represents the velocity of the

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In an acceleration time graph y-axis represents the acceleration, and

x-axis represents the time

The table represents the <em>speed of a car in a northern</em> direction over

several seconds

That means the data in the table represent the <em>velocity</em> of the car in a

certain time

Time (s)             Velocity (m/s)  

   0                            5

   2                            10

   4                            15

   6                            20

   8                            25

   10                           30

Column 1 would be on the x-axis

x-axis represents the time

Column 2 would be on the y-axis

y-axis represents the velocity

Column 1 should be titled “Time,” and Column 2 should be titled

“Velocity.”

3 0
4 years ago
Read 2 more answers
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here it can be said that medium 2 will be rarer then medium 1

So here the possible options are

1. Water  

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2. Diamond  

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So in above two options medium 1 is denser and medium 2 is rarer

8 0
3 years ago
Is it possible to calculate the displacement based on an elapsed time from a position time graph?
Nataly [62]
No I don’t think so. But it worth a try tho. Try it out.
5 0
3 years ago
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