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3 years ago

Why is the big bang called a theory?

Physics

2 answers:

Marianna [84]3 years ago

8 0

Answer:

Because the big bang theory was created based on an hypothesis that our unvierse was created by a mass explosion of gas and other debris

Explanation:

viva [34]3 years ago

5 0

There is no scientific way to prove that it happened it’s like a hypothesis without being able to test the hypothesis

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If the density of iron is 7.87 g/cm3, what is the volume of the 12.00 g piece of iron? use proper significant figures.

Lelechka [254]

1.524777636594663 cm^3

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3 years ago

I need help with this for physics

Vanyuwa [196]

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3 years ago

Find the initial velocity

Alla [95]

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Explanation:

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3 years ago

Which device conferts electric energy into mechanical energy

Phantasy [73]

An electric motor converts electrical energy into mechanical energy.

What is electric motor?

An electric motor is an electrical machine that converts electrical energy into mechanical energy.

A generator is mechanically identical to an electric motor, but operates with a reversed flow of power

Hence it will convert mechanical energy into electrical energy.

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Industrial fans, blowers and pumps, machine tools, household appliances, power tools, vehicles, and disk drives.

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2 years ago

Sand falls from a conveyor belt at a rate of 30 m3m3/min onto the top of a conical pile. The height of the pile is always 3535 o

Reil [10]

Explanation:

As the given data is as follows.

h = $\frac{3}{5}d$

= $\frac{3}{5} \times (2r)$

Also, we know that r = $\frac{4}{3}h$

and Volume (V) = $\frac{1}{3} \pir^{2}h$

= $\frac{1}{3} \pi (\frac{4}{3}h)^{2} h$

= $\frac{16}{27} \pi h^{3}$

And, $\frac{dV}{dt} = \frac{3 \times 16}{27} \pi h^{2} \frac{dh}{dt}$

$\frac{dV}{dt} = \frac{16}{9} \pi h^{2} \frac{dh}{dt}$

Putting the given values into the above formula as follows.

$\frac{dV}{dt} = \frac{16}{9} \pi h^{2} \frac{dh}{dt}$

$30 m^{3}/min = \frac{16}{9} \pi (2)^{2} \frac{dh}{dt}$

[tex]\frac{dh}{dt} = 1.343 m/min

or, = 134.3 cm/min (as 1 m = 100 cm)

thus, we can conclude that the height changing at 134.3 cm/min when the pile is 2 m high.

4 0

3 years ago

Why is the big bang called a theory?​

Why is the big bang called a theory?