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KATRIN_1 [288]
3 years ago
5

The Sun is essential to life on earth. Which of the statements is not true about the Sun's importance to life on the earth?

Physics
2 answers:
serg [7]3 years ago
8 0

Answer: The correct answer is Option B.

Explanation:

Sun is star present in Our Solar System around which Earth revolves. Earth is the third planet in Our Solar system and is the only planet on which life exists.

The existence of life on Earth is because of the Sun. It plays a very important role. Sun helps the earth to keep moving in a fixed orbit because of the gravitational attraction towards the Sun. It also supports the processes of water cycle on Earth by evaporating the water.

The climate and temperature conditions on Earth is due to the Sun only.

Plate tectonics is the theory which states that the Earth's outer shell is divided into several plates which glide over the mantle. There is no role of Sun to play in the process of plate tectonics.

Hence, the correct answer is Option B.

MakcuM [25]3 years ago
3 0
I think that the answer is B that the sun (DOES NOT) support  the processes of plate tectonics
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what is the initial velocity of a go-kart traveling at a uniform acceleration of 0.5 m/s^2 for 5s as it slows down to a stop?​
timurjin [86]

The initial velocity of go-kart is 2.5 m/s.

<u>Explanation:</u>

Here, the uniform acceleration of go-kart is given as 0.5 m/s². Also the time required by it to stop is also given as 5 s. As acceleration is the measure of change in velocity per unit time.

In this case, the velocity should be changed from a value to zero to come to rest. So the initial velocity will be positive value and final velocity is zero.

As we know the values of acceleration, final velocity and time, the initial velocity can be easily determined as follows.

Acceleration = \frac{Final velocity -Initial velocity}{Time}

Since, final velocity is zero, acceleration is 0.5 m/s² and time is 5 s, then,

        -0.5=\frac{-\text {Initial velocity}}{5}

        Initial velocity = 0.5 × 5 = 2.5 m/s.

So the initial velocity of go-kart is 2.5 m/s.

8 0
3 years ago
Which wave must have a medium to travel?
o-na [289]

Letter B

without a medium, there is nothing to compress, hence, no wave. A fast- medium like a gas (air) is easy to compress and allows waves to move through it easily. a slow medium, like a liquid, is still pretty fast, but not as fast as air.

6 0
3 years ago
Read 2 more answers
Ezekiel is standing inside a spaceship ( S′ frame) that moves to the right at a speed of v=0.5c , where c is the speed of light.
vova2212 [387]

Answer:

c. Both signals are simultaneous.

Explanation:

The speed of light is the same in all frame of reference.

Since an observer inside the ship receives both signals at the same time, then the signals from both flashlight are simultaneously.

3 0
3 years ago
How is position time and motion related
rusak2 [61]
When you make a motion you change position over time.
5 0
3 years ago
A possum is trying to cross the street. Its velocity v as a function of time t is given in the graph below
AlladinOne [14]

Answer:

-10

Explanation:

The rectangular area is the base bbb times height hhh.

\begin{aligned}\Delta x&= A \\\\ &=(2\,\text s)\left (-5\,\dfrac{\text m}{\text s}\right ) \\\\ &= -10\,\text m\end{aligned}

Δx

​

 

=A

=(2s)(−5

s

m

​

)

=−10m

​

The possum displaces 10\,\text m10m10, start text, m, end text to the left.

4 0
3 years ago
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