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3 years ago

Asteroids, meteoroids, and comets are remnants of the early solar system. (T/F)

Physics

1 answer:

4vir4ik [10]3 years ago

8 0

Answer: Asteroids, meteoroids, and comets are remnants of the early solar system. This Statement is TRUE.

Explanation:

METEOROID: these are small rocky or metallic objects found in outer space.

ASTEROIDS: these are also known as minor planets of the inner solar system. They are irregularly shaped object in space that orbits the Sun.

COMETS: these are dusty chunk of ice, that moves in a highly elliptical orbit about the sun.

Asteroids, meteoroids, and comets as remnants of the early solar system was further proved in nebular hypothesis

initially proposed in the eighteenth century by German philosopher Immanuel Kant and French mathematician Pierre-Simon Laplace. (The word nebula means a gaseous cloud.) According to the modern version of the theory, about 4.5 to 5 billion years ago the solar system developed out of a huge cloud of gases and dust floating through space. These materials were at first very thin and highly dispersed.

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I WIL A 2.00-kg object traveling east at 20.0 m/s collides with a 3.00-kg object traveling west at 10.0 m/s. After the collision

pishuonlain [190]

Using the following given values:

Object 1:
Mass = M1 = 2 kg
Velocity before collision = Vb1 = 20 m/s
Velocity after collision = Va1 = -5 m/s

Object 2:
Mass = M2 = 3 kg
Velocity before collision = Vb2 = -10 m/s
Velocity after collision = Va2 = ? m/s

Obtaining Va2 via law of conservation of momentum:

total momentum after collision = total momentum before collision
M1 * Va1 + M2 * Va2 = M1 * Vb1 + M2 * Vb2
2*-5 + 3Va2 = 2*20 + 3*-10
Va2 = 6.67

Total kinetic energy before collision:

KE1 = (1/2)*M1*Vb1^2 + (1/2)*M2*Vb2^2
KE1 = (1/2)*2*(20)^2 + (1/2)*3*(-10)^2
KE1 = 550 J

Total kinetic energy after collision:

KE2 = (1/2)*M1*Va1^2 + (1/2)*M2*Va2^2
KE2 = (1/2)*2*(-5)^2 + (1/2)*3*(6.67)^2
KE2 = 91.73 J

Total kinetic energy lost:

Energy lost = KE1 - KE2 = 550 - 91.73 = 458.27 J

4 0

4 years ago

Architects have to consider how sound travels when designing large buildings such as theaters, auditoriums, or museums. Sound in

serious [3.7K]

Answer:

I₂ = 0.04 W / m²

Explanation:

Sound intensity is the power emitted between the unit area

I = W / A

W = I A

sound is a wave that travels in space whereby its energy is distributed on the surface of a sphere

A = 4π r²

we substitute

W = I (4π r²)

the emission power is constant, so the intensity at two different points is

W = I₁ 4π r₁² = I₂ 4π r₂²

so the equation is

I₁ r₁² = I₂ r₂²

In this case the units are not shown in the exercise, suppose that all units are in the SI system

I₂ = $I_1 \ \frac{r_1^2}{r_2^2}$

let's calculate

I₂ = 4 $4 \ \frac{2^2}{20^2}$

I₂ = 0.04 W / m²

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3 years ago

A physicist found that a force of 0.72N was measured between two charged sphere. The distance between the sphere was 0.90 m. Cal

aalyn [17]

What you can use is coulomb's inverse square law that states that force varies inversly as the square of distance. It menas that the force is calculated by dividing by distance squared. what this does is essentially as the distance doubles, the forces is reduced by a factor of 4 or can be divided by 4. Force at 0.5m=2.3328N. And brings you ti the answer

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What is electricity?

quester [9]

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Explanation:

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KengaRu [80]

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