3 years ago

What is the medium of earthquake waves

1 answer:

8 0

Earthquakes generate two types of waves p waves and s waves. p waves travel through solids liquids and gasses. s waves travel through only solids.

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LenaWriter [7]

Answer: 7.41 m/s

Explanation: By using the law of of energy, kinetic energy of the brick as it falls equals the potential energy before falling.

Kinetic energy = mv²/2, potential energy = mgh

mv²/2 = mgh

v²/2 = gh

v² = 2gh

v = √2gh

Where g = 9.8 m/s², h = 2.80m

v = √2×9.8×2.8 = 7.41 m/s

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3 years ago

a sponge and a bar of soap occupy the same amount of space, but the soap is much more dense than the sponge

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Yes, that's correct. That's a big part of the reason why
the soap floats in water and the sponge sinks in it.

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I think it is B I have a 94 in phisics

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3 years ago

What is the power of a machine that pushes with a force of 3 n for a distance of 9 m in 8 s?

dalvyx [7]

The work done by the machine is equal to the product between the force applied and the distance over which the force is applieds, so in this case:
$W=Fd=(3 N)(9 m)=27 J$

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The number line shows the starting and ending velocities for ball 1. What’s the change in velocity of ball 1? Calculate the valu

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The starting velocity for ball 1 is 1.00 meter/second. Its ending velocity is 0.25 meter/second.

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