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3 years ago

Any clue on this one I know it’s not D

Physics

2 answers:

Amiraneli [1.4K]3 years ago

6 0

Answer: C liquids because sound travels fast underwater

Explanation:

The vacuum would make it hard to hear her up close yet alone far away

Density makes it harder to hear

Ex. If you have a ice cube campared it a cup of water and you blow on it the water will have move movement because there is more available space for movement as compared to a ice cube

And the last one is also incorrect

inessss [21]3 years ago

5 0

I think it is D because gas particles move the fastest but if not then it is A

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A 3.0-kg brick rests on a perfectly smooth ramp inclined at 34° above the horizontal. The brick is kept from sliding down the pl

Firdavs [7]

Answer:

d=0.137 m ⇒13.7 cm

Explanation:

Given data

m (Mass)=3.0 kg

α(incline) =34°

Spring Constant (force constant)=120 N/m

d (distance)=?

Solution

F=mg

F=(3.0)(9.8)

F=29.4 N

As we also know that

Force parallel to the incline=FSinα

F=29.4×Sin(34)

F=16.44 N

d(distance)=F/Spring Constant

d(distance)=16.44/120

d(distance)=0.137 m ⇒13.7 cm

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