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zlopas [31]
2 years ago
8

the distance between student home and school is 1.5 km what is the distance traveld bythe students in a week​

Physics
1 answer:
olasank [31]2 years ago
3 0

Answer:

10.5k

Explanation:

1.5x7=10.5

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The particles move perpendicular to the direction of the wave.
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Calculate the molecular weight of Aluminium hydroxide​
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<h3><em>Al(OH)3 = 78.01 g/mol</em></h3>
5 0
3 years ago
A red cross helicopter takes off from headquarters and flies 120 km at 70 degrees south of west. There it drops off some relief
fiasKO [112]

Answer:

130 km at 35.38 degrees north of east

Explanation:

Suppose the HQ is at the origin (x = 0, y = 0)

So the coordinates of the helicopter after the 1st flight is

x_1 = -120cos70^o = -41.04 km

y_1 = -120sin70^o = -112.763 km

After the 2nd flight its coordinate would be:

x_2 = x_1 - 75sin60^o = -41.04 - 64.95 = -106km

y_2 = y_1 + 75cos60^o = -112.763 + 37.5 = -75.263 km

So in order to fly back to its HQ it must fly a distance and direction of

s = \sqrt{y_2^2 + x_2^2} = \sqrt{75.263^2 + 106^2} = \sqrt{5664.519169 + 11236} = \sqrt{16900.519169} = 130 km

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3 0
3 years ago
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