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3 years ago

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According to the Big Bang theory how long ago did the universe started??

2 answers:

Rashid [163]3 years ago

7 0

According to the Big Bang theory how long ago did the universe started??
13 to 15 billion years ago

laiz [17]3 years ago

3 0

According to the Big Bang theory the universe started approximately 13-15 billion years ago. The big bang theory is a theory that scientists developed and so the belief is that the universe, all of us, planet, our bodies and everything and planets all just got here from some Non-Magical/Non-Spiritual/Non-omnipotent being but rather scientifically we all just got here from some big explosion.

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What are two ways of changing PE?

Anna35 [415]

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3 years ago

A water wave most resembles what ? <br> O light wave<br> O transverse wave<br> O longitudinal wave

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3 years ago

A student sets up an experiment to determine the inertial mass of a cart. The student has access to the following measurement eq

wlad13 [49]

Answer:

The correct answers are a and d

Explanation:

In this experiment it can be analyzed using Newton's second law

F = m a

m = F / m

The outside is supplied by the spring balance and is constant, therefore the acceleration of the system is also constant.

The acceleration can be found with the kinematic equations

x = v t + ½ a t²

As we start from rest the initial speed is zero

a = 2 x / t²

Therefore we need the reading of position and time.

Finally, the relationship between the balance reading and this acceleration of the mass of the system

Let's analyze the answers

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d) true. It is the other magnitude necessary for the calculation.

The correct answers are a and d

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3 years ago

Read 2 more answers

Diamonds are a very dense material. Predict what would happen to the light ray if you projected it from air through a diamond.

pochemuha

It [the diamond] would act like a prism, and make a rainbow, or, the light would break up and disappear

Hope I helped!
~Mathlete12321

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3 years ago

The speed of sound in air is 320 ms-1 and in water it is 1600 ms-1. It takes 2.5 s for sound to reach a certain distance from th

Nonamiya [84]

Answer:

Distance covered by the sound in air is 800 meter and the time taken by the sound in water for the same distance is 0.5 seconds.

Explanation:

Given:

Speed of sound in air = 320 m/s

Speed of sound in water = 1600 m/s

Time taken to reach certain distance in air = 2.5 sec

a.

We have to find the distance traveled by sound in air.

Distance = Product of speed and time.

⇒ $Distance = Speed\times time\ taken$

⇒ $Distance = 320\times 2.5$

⇒ $Distance = 800$ meters.

b.

Now we have to find how much time the sound will take to travel in water.

⇒ Time = Ratio of distance and speed

⇒ $Time =\frac{distance}{speed}$

⇒ $Time =\frac{800}{1600}$ <em> ...distance = 800 m and speed = 1600 m/s</em>

⇒ $Time =\frac{1}{2}$

⇒ $Time =0.5$ seconds.

Distance covered by the sound in air is 800 meter and the time taken by the sound in water for the same distance is 0.5 seconds.

7 0

3 years ago