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Sholpan [36]
1 year ago
5

Which of the following statements are true of free-

Physics
2 answers:
Ipatiy [6.2K]1 year ago
7 0

Answer: rate of accelerations is same a=g

Explanation:

eduard1 year ago
5 0

Statement "a" is true.

it's the only one of the bunch.

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Draw two unique free body diagrams that each show a net force of 30 N to the left.​
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Answer:

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3 years ago
What, roughly, is the percent uncertainty in the volume of a spherical beach ball whose radius is 5.66 0.09 m?
iren2701 [21]

Answer:

  • 4.77 %

Explanation:

We know that the volume V for a sphere of radius r is

V(r) = \frac{4}{3} \ \pi \ r^3

If we got an uncertainty \Delta r the formula for the uncertainty of V is:

\Delta V(r) = \sqrt{  (\frac{dV}{dr} \Delta r)^2  }

We can calculate this uncertainty, first we obtain the derivative:

\frac{dV}{dr}  = 3 * \frac{4}{3} \ \pi \ r^2

\frac{dV}{dr}  = 4 \ \pi \ r^2

And using it in the formula:

\Delta V(r) = \sqrt{  (4 \ \pi \ r^2\Delta r)^2  }

\Delta V(r) = \sqrt{  4^2 \ \pi^2 \ r^4 \Delta r^2  }

\Delta V(r) =  4 \  \pi \ r^2 \Delta r

The relative uncertainty is:

\frac{\Delta V(r)}{V(r)}

\frac{ 4 \  \pi \ r^2 \Delta r  }{ \frac{4}{3} \ \pi \ r^3}

\frac{ 3  \Delta r  }{  r}

Using the values for the problem:

\frac{ 3 * 0.09 m  }{  5.66 m} = 0.0477

This is, a percent uncertainty of 4.77 %

4 0
2 years ago
One characteristic of mass wasting processes is that they a. only operate on steep slopes. b. move materials very slowly. c. ope
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One characteristic of mass wasting processes is that they move materials relatively short distances compared to streams. - d.

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E. weight = mass x gravitational field strength
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