PHYSICS MIDDLE SCHOOL

Two planets of the same mass are observed.Which of the following distances between the two planets would result in the least gravitational attraction?

A. 90 light years
B. 80 light years
C. 60 light years
D. 50 light years

Answers

Answer 1
Answer: It really doesn't matter what mass the planets have, or whether they're equal, or whether they're planets. The farther apart two objects are, the less gravitational attraction there is between them.
Answer 2
Answer: As the distance increases, the gravitational force between them decreases.
So, the option with the largest distance is (A) 90 light yrs. And that's the answer !!

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The rotation of Earth on its axis causes _______ and _______. The revolution of the Earth around the sun causes the ______.

Answers

Answer:

The revolution of the earth around the sun and the tilt of the earth's axis cause the changing of the seasons.

Explanation:

Final answer:

The Earth's rotation causes day and night, while its revolution causes seasons. This happens due to how the rotation exposes different parts of the Earth to the sun, and how the tilt of the Earth's axis during revolution causes varying sunlight exposure.

Explanation:

The rotation of Earth on its axis causes day and night. This astronomical phenomenon happens because as the Earth rotates, different parts of it are exposed to the Sun's light, creating the cycle of day and night. On the other hand, the revolution of the Earth around the sun causes the seasons. As the Earth orbits the Sun, the tilt of our planet's axis causes different parts of the Earth to receive varying degrees of sunlight throughout the year, which results in the changes in weather conditions we know as seasons.

Learn more about Earth's rotation and revolution here:

brainly.com/question/22421

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Is putting something in a blender a physical or chemical change and how ?

Answers

physical because you are not changing the substance chemical way in other words youre not changing the compond of what its made out of you are just bending it. but if you blend it with something else for exemple a bananna with a strawbery you are changing its structure wich would be chemical.
physical if you will not turn on the blender.
chemical if you will turn the blender on and mix the ingrediants 

Help please I can't do these !!!!You throw a rock off the top of a building located on the Planet Mars with an initial velocity of10.0 m/s. The force of gravity on Mars is ⅓ that of Earth. It takes 12.0 s to hit the ground. How tall is the building?


You shot a gun straight up into the air with a velocity of 500 m/s. How long will it take beforeit hits the ground again?


You shoot a gun with a initial velocity of 500 m/s horizontally at the exact instant you drop arock from exactly the same height (at 1.6 m off of the ground). Which one will hit the ground first.

Answers

1) G.mars= 9.8x(1/3)=3.26
Vi=10 m/s , T=12 sec
Dis. = Vi(t)+1/2(g)(t)^2
(10)(12)+1/2(3.26)(12)^2= 354.72
2)V=500 m/s
Hmax= v^/2(g) = 500^2/2(9.8) = 12755.1

How do convection cells in Earth's atmosphere cause high and low pressure belts?

Answers

Areas of rising air causes low air pressure areas and Areas of sinking air are areas of high air pressure

Which of these is a concave lens?

Answers

Answer: The correct answer is Image 2.

Explanation:

Concave lens is defined as the lens which diverges the light falling on it. It is considered as a diverging lens.

Convex lens is defined as the lens which converges the light falling on it. It is considered as a converging lens.

Types of concave lens:

  • Plano-concave lens: In this one side of the lens is plane and one side is concave.
  • Double concave lens: In this, both the sides of the lens is concave.
  • Convexo-concave lens: In this, the convex face of the lens has greater degree of curvature than the concave face.

Types of convex lens:

  • Plano-convex lens: In this one side of the lens is plane and one side is convex.
  • Double convex lens: In this, both the sides of the lens is convex.
  • Concavo-convex lens: In this, the convex face of the lens has smaller degree of curvature than the concave face.

So, image 1 is a double convex lens, image 2 is a plano-concave lens, image 3 is a plano-convex lens and image 4 is a concavo-convex lens.

Hence, the correct answer is Image 2.

Answer:

Explanation:

It's B i just took the test :)

What is rock that forms when melted, or molten, rock from Earth's mantle cools and hardens is called what? pleas answer as soon as possible

Answers

An igneous rock. Hope this helped!
Igneous rock is a rock that forms from molten rock that cools.
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