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Virty [35]
2 years ago
10

assuming that the seafloor is spreading at a rate of 1.3cm/yr, calculate how long it took africa's west coast to move 2400 kn aw

ay from the mid atlantic ridge
Physics
1 answer:
Verdich [7]2 years ago
3 0

Answer: 184,615,384.6 years

Explanation:

This problem can be solve by the following equation:

V=\frac{d}{t} (1)

Where:

V=1.3 \frac{cm}{year} \frac{1 km}{100000 cm}=0.000013 \frac{km}{year} is the spreading rate of the seafloor, its velocity

d=2400 km is the distance the Africa's west coast moved at this rate

t is the time it took to the coast to move the descibed distance

Isolating t from (1):

t=\frac{d}{V} (2)

t=\frac{2400 km}{0.000013 \frac{km}{year}} (3)

Finally:

t=184,615,384.6 years This is the time it took to the Africa's west coastto  move away from the Mid atlantic ridge.

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15 and Increasing

Explanation:

Hope this helps

Have a wonderful day and many more to come

Alexis~

~A.K.A Moon~

7 0
2 years ago
18. How much force would it take to push another, larger friend who has a mass of 70 Kg to accelerate
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2 years ago
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Answer:

<em>faster and at a higher luminosity and temperature.</em>

Explanation:

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8 0
3 years ago
Two long, parallel wires are attracted to each other by a force per unit length of 350 µN/m. One wire carries a current of 22.5
pishuonlain [190]

Answer

given,

force per unit length = 350 µN/m

current, I = 22.5 A

y = y = 0.420 m

\dfrac{F}{L}= \dfrac{KI_1I_2}{d}

I_2 = \dfrac{F}{L}\dfrac{d}{KI_1}

I_2 = 350\times 10^{-6}\times \dfrac{0.42}{2 \times 10^{-7}\times 22.5}

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distance where the magnetic field is zero

\dfrac{4\pi \times 10^{-7}\times 32.67}{2\pi y_1}=\dfrac{4\pi \times 10^{-7}\times 22.5}{2\pi (0.42-y_1)}

y_1 = 0.248\ m

there the distance at which the magnetic field is zero in the two wire is at 0.248 m.

3 0
3 years ago
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8 0
3 years ago
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