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schepotkina [342]
3 years ago
14

Sound is a type of _____ wave.

Physics
1 answer:
saul85 [17]3 years ago
8 0
Sound is an example of a mechanical wave. Mechanical waves are the kinds of waves that cannot be propagated without a medium. As such, these waves cannot travel through a vacuum, just like how sound cannot travel through space, since space is a vacuum.
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What is the Voltage of a circuit that has a resistance of 50 and a current of 2 A?
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Answer:

It's actually 100V

Explanation:

To answer this, you'd need to use Ohm's law, which states that Voltage is equivalent to the product of Current and Resistance (V=IR).

V = 50 × 2

V = 100

Therefore the voltage is a 100V.

None of the answers you have listed match this though, so I'm guessing it either must be typo or the question itself is wrong.

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Lava that cools so quickly that ions do not have time to arrange themselves into crystals will form igneous rocks with a _____ t
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Answer:

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Explanation:

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zubka84 [21]

Answer:

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Explanation:

B) What is the enthalpy change, ∆H, for this reaction? Show your work to receive full credit (5 points) The enthalpy change is 150. To find it we must subtract energy of products (200) & the energy of reactants (50) so 200 – 50 equals 150.

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