PHYSICS MIDDLE SCHOOL

What function do capillaries serve in the cardiovascular system?A.
carry blood to the brain
B.
return blood to the lungs
C.
help control body temperature
D.
replace old blood cells

Answers

Answer 1
Answer: Hey there! 
The correct answer to the question is B) return blood to the lungs.

Capillaries are the smallest blood vessels in our body. Capillaries allow the exchange of water, oxygen, carbon dioxide, nutrients, minerals, and wastes in the body. 

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Answer 2
Answer:

Answer:

Its C

 I hope this helps!!!

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Polaris, the North Star, is almost always visible in the same location because A) it is the brightest star in the sky. B) it is gravitationally attracted to our sun. C) it is the closest star to the earth, besides our sun. Eliminate D) the axis of the earth passes directly through the North Star.

how far away is all 9 planets from the sun

 

Answers

I'll provide the average distance for each since the orbit of each of the planets is not a perfect circle. The distance varies (M= Miles)

Mercury= 36,000,000 M
Venus= 67,200,000 M
Earth= 93,000,000 M
Mars= 141,600,000 M
Jupiter= 483,600,000 M
Saturn = 888,200,000 M
Uranus = 1,789,500,000 M
Neptune = 2,798,650,000
Pluto = 3,674,500,000 M
The distance of each planet from the sun varies from each other. Mercury is 58 kilometres away, Venus is 108 kilometres away while the earth is 150 kilometres away from the sun. Mars is 228 kilometres away from the sun while Jupiter is 778 kilometres away and Saturn is 1430 kilometres away from the sun. Uranus is 2870 kilometres away from the sun, while Neptune and Pluto are 4,500 kilometres and 5,910 kilometres away from the sun.

How does mass and velocity affect momentum

Answers

If the object have a greater mass it will have a greater velocity, vise-versa for an object with a lower mass.

Final answer:

Momentum, a physics concept, is the product of mass and velocity of an object. An increase in either mass or velocity will increase an object's momentum. Momentum has the same direction as that of velocity.

Explanation:

Momentum in physics is the product of an object's mass (m) and velocity (v), represented as P=mv. Due to this relationship, if either the mass or the velocity of an object increases, its momentum will also increase. The momentum's direction is the same as the velocity's direction. If the direction of motion changes, the momentum's direction will also change.

Consider a situation where a car bumps into another car in front of it. Both the cars will experience a change in velocity and hence a change in momentum due to the collision. However, taking into account the principle of conservation of momentum, the total momentum before the collision would be equal to the total momentum after the collision, assuming that friction is negligible.

For example, a football player with greater mass running at high velocity will collide with greater impact because of greater momentum. Similarly, a smaller object moving with a high velocity can also achieve high momentum.

Learn more about Momentum here:

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The height of a flagpole is 8.5 meters tall. If the length of the meter stick shadow is 1.5 meters long ,what would be the the length of the flagpoles shadow?

Answers

Explanation:

Similar triangles:

1.5 m / 1 m = x / 8.5 m

x = 12.75 m

Round as needed.

You can see yourself in the mirror because?

Answers

Mirrors reflect light waves.
The reason your able to see yourself in mirror is because it's a reflective surface and light comes and reflects of a reflective surface, it's not just because somethings shiny.

Somebody please help me my grade depends on it

Answers

Answer:  Hope this helps!

Explanation:

a rock formed from particles that are deposited and lithified are sedimentary.

rocks formed from cooling and hardening magma or lava is igneous.

a rock formed when an already existing rock is subjected to extreme heat and pressure is metamorphic.

Make labeled diagrams of badminton court and badminton racket.

Answers

Answer:

labeled diagrams for badminton court and badminton racket

Explanation:
here are pictures for badminton court and racket
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