3 years ago

Which of the following is not a type of mechanical wave?

Chemistry

2 answers:

m_a_m_a [10]3 years ago

5 0

Answer:

concave

Explanation:

Otrada [13]3 years ago

3 0

Concave is not a type of mechanical wave because it doesn’t need a medium for propagation.

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2 years ago

Radio waves travel at the speed of light which is 3.00 x 10^8. How many minutes does it take for a radio message to reach saturn

ryzh [129]

Answer:

43.89 min

Explanation:

Given that:-

The speed of light = $3.00\times 10^8\ m/s$

The distance = $7.9\times 10^8\ km$

The conversion of distance in km to distance into m is shown below as:-

1 km = 1000 m

So,

Distance = $7.9\times 10^8\times 1000\ m=7.9\times 10^{11}\ m$

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$Speed=\frac{Distance}{Time}$

Thus,

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Also, 1 s = 1/60 min

So,

Time= $\frac{2633.33}{60}\ min=43.89\ min$

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3 years ago

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The answer would be 1000 cm3

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3 years ago

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2 years ago

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