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Inessa [10]
3 years ago
11

Decide whether the attribute describes Earth, Venus, or both Earth and Venus.

Physics
2 answers:
kykrilka [37]3 years ago
5 0

Answer:

1) Has a rocky, metallic composition -Both

2) Experiences retrograde rotation, spinning clockwise as viewed from above- Venus

3)Experiences the greenhouse effect, which warms the planet - Both

4) Is the densest planet in the solar system - Earth

5) Is located an ideal distance from the Sun, allowing it to support life -Earth

6) Is one of the brightest objects in the night sky, sometimes mistaken for a star-Venus

Explanation:

Venus and Earth are terrestrial planets. They have rocky surface. Venus is characterized by a very thick atmosphere which traps the sun light and makes it the hottest planet of the solar system. Greenhouse effect warms both the planets.

Earth is the only planet on which life exists. It is located at ideal distance from the Sun which helps to maintain sustainable conditions -temperature to support life on it. Venus is known as morning and evening star as it is the brightest objects.

Earth is the densest planet of the solar system having density 5.51 g/cm³. Venus experiences retrograde rotation due to the tilt of its axis (177.3°). Due to this tilt it appears to rotate in opposite direction than other planets.

masha68 [24]3 years ago
3 0

1). both

2). Venus

3). Venus catastrophically; Earth too but much less.

4). Earth

5). Earth

6). Venus (It would be pretty hard for US to mistake Earth for a star.)


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Which is not a common property of ionic compounds?
Dmitriy789 [7]

Answer:

low melting point

Ionic compounds have high melting and boiling points. This is because a considerable amount of energy is required to break the strong inter-ionic attraction

Explanation:

8 0
3 years ago
A polar bear runs at a speed of 11 m/s and has a mass of 380.2 kg. How much Kinetic energy does the bear have?
Yanka [14]

Answer:

\boxed{\sf Kinetic \ energy \ of \ the \ bear (KE) = 23002.1 \ J}

Given:

Mass of the polar bear (m) = 6.8 kg

Speed of the polar bear (v) = 5.0 m/s

To Find:

Kinetic energy of the polar bear (KE)

Explanation:

Formula:

\boxed{ \bold{\sf KE =  \frac{1}{2} m {v}^{2} }}

Substituting values of m & v in the equation:

\sf \implies KE =  \frac{1}{2}  \times 380.2 \times  {11}^{2}

\sf \implies KE = \frac{1}{ \cancel{2}}  \times  \cancel{2} \times 190.1 \times 121

\sf \implies KE = 190.1 \times 121

\sf \implies KE = 23002.1 \: J

\therefore

Kinetic energy of the polar bear (KE) = 23002.1 J

5 0
3 years ago
Which option is the most accurate description of speed?
puteri [66]
B I think is the answer
5 0
3 years ago
When 560,000 is written in scientific notation, what is the power of 10?
tensa zangetsu [6.8K]
5.6•10^5 so it’s to the power of positive 5
3 0
3 years ago
Read 2 more answers
If it requires 2.0 J of work to stretch a particular spring by 2.0 cm from its equilibrium length, how much more work will be re
valina [46]

Answer:

16 J

Explanation:

It is given that,

Work done, W = 2 J

A spring is stretched by 2.0 cm from its equilibrium length

We need to find how much more work will be required to stretch it an additional 4.0 cm.

Let k is the spring constant of the spring. When W = 2J, and x = 2 cm, then energy required to stretch the spring is :

U=\dfrac{1}{2}kx^2\\\\k=\dfrac{2U}{x^2}\\\\k=\dfrac{2(2)}{(0.02)^2}\\\\k=10000\ N/m

The energy required to stretch the spring from 2 cm to additional 4 cm i.e. 2+4= 6 cm.

W=\dfrac{1}{2}k(x_2^2-x_1^2)\\\\=\dfrac{1}{2}\times 10000\times ((0.06)^2-(0.02)^2)\\\\W=16\ J

So, the required work done is 16 J.

7 0
3 years ago
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