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olga55 [171]
3 years ago
14

What metric unit would you use to estimate the actual distance between Boston and New York?

Physics
1 answer:
mrs_skeptik [129]3 years ago
7 0
I would use miles Because miles will give you less of an answer
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A wave is travelling at 3000 m/s has a wavelength of 1 m.
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physics A river flows at a speed vr = 5.37 km/hr with respect to the shoreline. A boat needs to go perpendicular to the shorelin
vova2212 [387]

Answer: Vb is the vector  (-5.37m/s,  8.59 m/s), with a module 10.13m/s

then the ratio Vb/Vr = 10.13m/s/5.37m/s = 1.9

Explanation:

We can use the notation (x, y) where the river flows in the x-axis and the pier is on the y-axis.

We have Vr = (5.37m/s, 0m/s)

Now, if the boat wants to move only along the y-axis (perpendicularly to the shore).

The velocity of the boat Vb will be:

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Then we should have that:

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the velocity in the y-axis is:

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So Vb = (-5.37m/s,  8.59 m/s)

the ratio Vb/Vr = 10.13m/s/5.37m/s = 1.9 where i used Vb as the module of the boat's velocity.

7 0
3 years ago
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