According to the big bang theory, after the "bang," the universe remained dark until

Is dimensionally correct equation must be physically correct . Explain your logic behind physically correct equation ?

anyanavicka [17]

An equation can be dimensionally correct but that does not mean that it is physically correct. Explanation is given in the photo.

8 0

1 year ago

Kepler's laws, satellites motion and weightlessness

Anon25 [30]

Answer:

First Kepler law states that Each planet describes an ellipsoidal motion about the sun as its single focus.

Second Kepler law states that An imaginary line joining a planet to the Sun sweeps out equal areas in equal time intervals.

Third Kepler law states that The squares of period of revolution of the planet around the sun are proportional to the cubes of mean distance between the planet and the sun.

Weightlessness is the condition where the body has zero gravity ( its acceleration is equal to the acceleration due to gravity )

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3 0

3 years ago

The force required to maintain an object at a constant velocity in free space is equal to

alex41 [277]

Answer:

The force required to maintain an object at a constant velocity in free space is equal to Zero.

7 0

3 years ago

If a cup of water has holes in it than why does no water come out when when it is falling?

quester [9]

Because the acceleration of gravity is the acceleration of gravity.
It doesn't matter what the mass of a falling object is, and it doesn't
matter whether a falling object is solid or liquid. ALL falling objects
fall with the same acceleration, reach the same speed, and hit the
ground at the same time.

If there was no air in the way, then a feather, a school bus, and a
battleship would accelerate at the same rate, fall together and hit
the ground at the same time.

When you drop a cup full of water that has holes in it, the cup and
the water fall with the same acceleration, reach the same speed,
and hit the floor at the same time. Then, THAT's the time to go
and get the mop.

8 0

3 years ago

Read 2 more answers

Why will air sink if it is colder than the air around it?

yawa3891 [41]

Answer:

The molecules in hot air are moving faster than the molecules in cold air.

8 0

3 years ago