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3 years ago

Sound is a _____ wave

Physics

1 answer:

erastova [34]3 years ago

4 0

~Hello There!~

Sound is a longitudinal wave.

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Gravity pulled materials together forming the planets in our solar system. The inner planets consist of dense material, such as

Ede4ka [16]

Scientist identify the process in which gravity pulled materials together forming the planets in our solar system as accretion.

Accretion is the formation model of planets in our solar system in which gravity pulls materials together forming the planets.

This formation model accounts for the formation of the inner planets made of of dense material such as iron. These planets include Mercury, venus, earth etc.

As the gravity pulls in the more dense material, the less dense material such as ice, liquid and gas colect together to form the outer planets, which include Jupiter, Uranus, etc.

So, Scientist identify the process in which gravity pulled materials together forming the planets in our solar system as accretion.

Learn more about accretion here:

brainly.com/question/17392929

7 0

2 years ago

A brave but inadequate rugby player is being pushed backward by an opposing player who is exerting a force of 800.0 N on him. Th

ipn [44]

Answer:

a) $F_{fric}$ = 692 N

b) $F_{applied}$ = 932 N

Explanation:

According to newton's second law of motion, acceleration of an object is directly proportional to the net force acting on it. When there is no net force force acting on the body, there is no acceleration. A force is a push or a pull, and the net force ΣF is the total force, or sum of the forces exerted on an object in all directions.

$F_{net}$ ∝ a

$F_{net}$ = ma

$F_{applied} - F_{fric}$ = ma

Given data:

$F_{applied}$ = 800 N

Mass = m = 90 kg

acceleration = a = 1.2 m/s²

$F_{fric}$ = ?

800 - $F_{fric}$ = (90)(1.2)

$F_{fric}$ = 692 N

According to newton's second law of motion,

$F_{net}$ ∝ a

$F_{net}$ = ma

$F_{applied} - F_{fric}$ = ma

Given data:

If we assume the same friction and acceleration between player's feet and ground as calculated in part a

$F_{fric}$ = 692 N

acceleration = a = 1.2 m/s²

We take the equal mass to the total mass of both the players because when the winning player push losing player backward, he exert force on the ground not only due to his mass but also due to the mass of losing player.

Mass = M = m₁ + m₂ = 110 kg + 90 kg

= 200 kg

$F_{applied}$ = ?

$F_{applied}$ - 692 N = (200)(1.2)

$F_{applied}$ = 692 + 240

$F_{applied}$ = 932 N

7 0

3 years ago

The first labor union in the United States was the

rosijanka [135]

Answer:

idk b idk ssry dude good luck tho