Which best describes the transition from gas to liquid?
gas is @ higher energy state than liq. so the transition must remove energy. so ans is a. Energy must be removed because particles in liquid move more slowly.
Answer:
option b is correct..................
This means that this substance has no fixed volume and can expand or shrink however it may want. An example is gas. Gas will always expand to fill up the space it is in.
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Answer:

Explanation:
Let's define the variables to proceed with the operations,
So,
The masses



Average distances


Gravitational constant

The formula of the Gravitational Force between the Moon and the Earth would be,



This force is in the direction of the earth.
We perform the same process but now between the Sun and the Moon, like this,



This force is in the direction of the Sun
The net force must be


This in the direction of the Sun.
Answer:

Explanation:
As we know that height of the slide is given as

so time taken by the child to hit the water from the slide is given as

now we will plug all data in it


now we know that the horizontal distance moved by it is given as



now by energy conservation

so height of point A is given as


