The Earth-centered model of the Solar System contains____planets.

Physics

2 answers:

Liula [17]2 years ago

8 0

Answer:

Explanation:

the geocentric and heliocentric models of the solar system contained the movements of the Sun, the Moon, and the five known planets. Which were Mercury, Venus, Mars, Jupiter, and Saturn.

andreyandreev [35.5K]2 years ago

5 0

Explanation:

The Solar System is the gravitation bound system.
In this system sun is the head of family along with many kids named as planets the largest are the eight planets and the remainder kids named as dwarf planets and small Solar System bodies.
The Solar System formed about 4.6 billion years back from the gravitational collapse of a giant interstellar molecular cloud.
The majority of the system's mass is enclosed by the Sun, with the majority of the remaining mass occupied by Jupiter.

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A hollow sphere of inner radius 8.82 cm and outer radius 9.91 cm floats half-submerged in a liquid of density 948.00 kg/m^3. (a)

kari74 [83]

Answer:

a) 0.568 kg

b) 474 kg/m³

Explanation:

Given:

Inner radius = 8.82 cm = 0.0882 m

Outer radius = 9.91 cm = 0.0991 m

Density of the liquid = 948.00 Kg/m³

a) The volume of the sphere = $\frac{4\pi}{3}\times(0.0991^2-0.0882^2)$

volume of sphere = 0.0012 m³

also, volume of half sphere = $\frac{\textup{Total volume}}{\textup{2}}$

volume of half sphere = $\frac{\textup{0.0012}}{\textup{2}}$

Volume of half sphere =0.0006 m³

Now, from the Archimedes principle

Mass of the sphere = Weight of the volume of object submerged

Mass of the sphere = 0.0006× 948.00 = 0.568 kg

b) Now, density = $\frac{\textup{Mass}}{\textup{Volume}}$

Density = $\frac{\textup{0.568}}{\textup{0.0012}}$

Density = 474 kg/m³

8 0

2 years ago

When an automobile moves with constant speed down a highway, most of the power developed by the engine is used to compensate for

sveta [45]

Answer:

F = -4567.40 N

Explanation:

Given that,

The power developed by the engine, P = 196 hp

1 hp = 746 W

196 hp = 146157 W

Speed of the car, v = 32 m/s

Let F is the total friction force acting on the car. The product of force and velocity is called the power developed by the engine. It is given by :

$P=-F\times v$