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3 years ago

* Which does not belong?* Radiation Radio Signal Light Earthquakes

Physics

1 answer:

Marina86 [1]3 years ago

3 0

Earthquakes does not belong because it is not an electromagnetic wave.

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What are three reasons why nebulae contribute more to stellar formation than other regions of the universe?

statuscvo [17]

Answer:

Nebulae contribute more to stellar formation than other regions because:

Explanation:

A.They have an unlimited supply of hydrogen.

B. They are believed to be rich in hydrogen and helium.

C. They have a three strong gravitational pull.

This are the reasons that Nebulae contribute more to stellar formation than other regions.

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3 years ago

Blank is overlapping food chains to better show the way energy moves through an ecosystem

Komok [63]

A <u>Food web</u> is multiple overlapping food chains.

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3 years ago

A car of mass 1000.0 kg is traveling along a level road at 100.0 km/h when its brakes are applied. Calculate the stopping distan

OleMash [197]

Explanation:

It is given that,

Mass of the car, m = 1000 kg

Speed of the car, v = 100 km/h = 27.77 m/s

The coefficient of kinetic friction of the tires, $\mu_k=0.5$

Let f is the net force acting on the body due to frictional force, such that,

$-f=ma$

$a=\dfrac{-f}{m}$

$a=\dfrac{-\mu _k mg}{m}$

$a=\mu_k g$

$a=-0.5\times 9.8$

$a=-4.9\ m/s^2$

We know that the acceleration of the car in calculus is given by :

$v.dv=a.dx$ , x is the stopping distance

$\int\limits^0_v {v.dv}=\int\limits^x_0 {a.dx}$

$\dfrac{v^2}{2}|_v^0=ax$

$0-(27.77)^2=-2\times 4.9x$

On solving the above equation, we get, x = 78.69 meters

So, the stopping distance for the car is 78.69 meters. Hence, this is the required solution.

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3 years ago

To solve a problem using the equation for keplerâs third law, enrico must convert the average distance of mars from the sun from

Natali5045456 [20]

1 astronomical unit = 149597870700m
Enrico should divide distance in meters with this number.

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3 years ago

Read 2 more answers

All of the changes listed below would be associated with physical changes in hominidsduring the Paleolithic Age EXCEPT

scoray [572]

Answer:

b. sharper sense of smell.

Explanation:

Paleolithic Age -

It is also called the old stone age , It is the time period in the prehistory of human beings , which is distinguished by the development of tools , which are made up of stones .

The physical changes that was associated with the Paleolithic Age are - large skulls , shorter arms , larger hips , sharper eyesight .

Hence ,

The answer is sharper sense of smell .

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3 years ago