Sound travels fastest in solids. A sound is a vibration that travels in a longitudinal direction through a medium in the form of a mechanical wave.
<h3>What is sound?</h3>
A sound is a vibration that travels in a longitudinal direction through a medium in the form of a mechanical wave.
It can propagate through a solid, a liquid, or a gas as its medium. Solids go the fastest, liquids are slower, and gases are the slowest.
Sound travels the quickest through a solid because the molecules are packed together densely, allowing sound waves to leap from one molecule to the next more quickly.
Because the molecules in solids are packed the tightest, sound travels the quickest through them, whereas sound travels the slowest through gases.
To learn more about the sound refer to the link;
brainly.com/question/927975
This is a simple application of Newton's Law of Universal Gravitation.
The force of gravity is inversely proportional to the distance between the two
centers of mass. We don't need to know the mass of earth or the test mass to
solve this, because we'll be setting up a proportionality, which means that all
controlled variables can be expressed as a proportionality constant which will
eventually cancel. <span>
Set up the following proportionality equation from
Newton's Universal Gravitation:
F = k/d²; where k is the constant of proportionality
Plug in values for F and d, making two
equations:
(9.803 N) = k/r²; where r is the radius of earth,
and
(9.792 N) = k/(r+h)²; where h is the height above
sea level.
Divide one by the other, and you get:
9.803 / 9.792 = (r+h)² / r²; the k cancels
Solve for h:
√(9.803 / 9.792) = (r+h) / r
r √(9.803 / 9.792) = r + h
r √(9.803 / 9.792) – r = h
Look up the value for r (radius of earth) and
evaluate:
(6371 km) √(9.803 / 9.792) – (6371 km) = h
<span>h ≈ 3.58 km</span></span>
Answer:
1. :uniformly accelerated motion
2. .0m/s
Answer: The circuit depicted at the right is an example of the use of both series and parallel connections within the same circuit. In this case, light bulbs A and B are connected by parallel connections and light bulbs C and D are connected by series connections. This is an example of a combination circuit.
Explanation:
