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3 years ago

A stationary boat bobs up and down with a period of 2.4 s when it encounters the waves from a moving boat.

1 answer:

8 0

It seems like the question is asking for the frequency.
Given:
Time period (T) = 2.4 sec

Frequency (f) =?

We know that the formula for frequency is:

Frequency (f) = 1/time period (T)

= 1 / 2.4 s

= 0.42 Hz. is the frequency for this problem.

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How many significant figures are in 107 moles of sodium

Blizzard [7]

Answer:

3 significant figures

Explanation:

here zero is counted as one of the significant figures since it lies next to an integer.

hence the number has 3 sfg

8 0

2 years ago

A primary succession does not include any invasive species True or false

yan [13]

To be referenced, it would be true

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3 years ago

A miniature quadcopter is located at x = -2.25 m and y, - 5.70 matt - 0 and moves with an average velocity having components Vv,

kupik [55]

Recall that average velocity is equal to change in position over a given time interval,

$\vec v_{\rm ave} = \dfrac{\Delta \vec r}{\Delta t}$

so that the x-component of $\vec v_{\rm ave}$ is

$\dfrac{x_2 - (-2.25\,\mathrm m)}{1.60\,\mathrm s} = 2.70\dfrac{\rm m}{\rm s}$

and its y-component is

$\dfrac{y_2 - 5.70\,\mathrm m}{1.60\,\mathrm s} = -2.50\dfrac{\rm m}{\rm s}$

Solve for $x_2$ and $y_2$ , which are the x- and y-components of the copter's position vector after t = 1.60 s.

$x_2 = -2.25\,\mathrm m + \left(2.70\dfrac{\rm m}{\rm s}\right)(1.60\,\mathrm s) \implies \boxed{x_2 = 2.07\,\mathrm m}$

$y_2 = 5.70\,\mathrm m + \left(-2.50\dfrac{\rm m}{\rm s}\right)(1.60\,\mathrm s) \implies \boxed{y_2 = 1.70\,\mathrm m}$

Note that I'm reading the given details as

$x_1 = -2.25\,\mathrm m \\\\ y_1 = -5.70\,\mathrm m \\\\ v_x = 2.70\dfrac{\rm m}{\rm s}\\\\ v_y=-2.50\dfrac{\rm m}{\rm s}$

so if any of these are incorrect, you should make the appropriate adjustments to the work above.

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3 years ago

Why are the very first stars thought to have been much more massive than the sun? (a the clouds that made them were much more ma

pashok25 [27]

I think the correct answer would be that the temperature of the clouds that made the very first stars where thought to be higher since the clouds are made up of hydrogen and helium. Hope this answers the question. Have a nice day.

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Ksju [112]

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f=ma 2
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3 years ago

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