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3 years ago

No physical processes have ever been demonstrated which provide a mechanism for the universe to assemble itself.

2 answers:

8 0

There are some very plausible hypotheses in modern Cosmology that use
well-known and long-proven Physics and Math to explain the evolution of the
universe, and account very nicely for the items and structures that we see all
around us in every direction.

The hypotheses have not been demonstrated, because it's really hard to
set up an experiment in the lab, and then wait several billion years for the
interstellar nebula to condense into a star and planets and life to form on
the planets.

So to answer the question, it's true that the processes have not been
demonstrated. But it's false that no plausible hypotheses exist that explain
the evolution of the modern universe, and that correspond nicely with what
we're able to observe of the structure of the universe today.

denis23 [38]3 years ago

7 0

Look into the big bang theory not sure if it is considered to be demonstrated but it is a popular scientific theory

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A power source of 6.0 V is attached to the ends of a capacitor. The charge is 12 C.

ArbitrLikvidat [17]

The electric field at any point in the region between the conductors is proportional to the magnitude Q of charge on each conductor. It follows that:

"The potential difference Vab between the conductors is also proportional to Q"

If we double the magnitude of charge on each conductor, the charge density at each point doubles, the electric field at each point doubles, and the potential difference between conductors doubles; however, the ratio of charge to potential difference does not change. This ratio is called the capacitance C of the capacitor:

$C= \frac{Q}{V_{ab}}$

Given that:

$V_{ab}=6V$ and $Q=12\mu C$

Lastly, the capacitance is given by:

$C= \frac{12\mu C}{6V}=2\mu F$

5 0

3 years ago

Read 2 more answers

In order to increase the efficiency of the detection-to-engagement sequence, one can never have too much information from sensor

Elan Coil [88]

Answer:

False

Explanation:

Much information can be gotten from sensor due to the much data being gathered.

7 0

3 years ago

Which of the following is the best example of an object in free fall?

SashulF [63]

The answer is D because theres nothing stopping that person from falling

5 0

3 years ago

Read 2 more answers

How do noise canceling headphones work?

postnew [5]

Answer:

B.) by interfering with sound waves

Explanation:

As we know that the interference of sound waves is of two types

1). constructive interference

2). destructive interference

now we know that constructive interference means the resultant intensity will be more than the intensity of interfering waves as here two waves are in same phase.

In destructive interference the resultant of two waves is given by the minimum resultant of the intensity as here the phase of two waves are opposite to each other.

So we will say that

$I = \sqrt{(I_1 + I_2 + 2\sqrt{I_1I_2}cos\theta)}$

here in case of noise cancelling headphones we know that the phase of noise is always made in opposite phase with the sound which is used to cancelled the noise.

This will reduce the noise and we will get a clear sound

5 0

3 years ago

Read 2 more answers

If the flea jumps straight up, how high will it go? (Ignore air resistance for this problem; in reality, air resistance plays a

Savatey [412]

Answer:

The flea will reach to a height of 5.2 cm.

Explanation:

Let us assume it is given that, a flea reaches a takeoff speed of 1.0 m/s over a distance of 0.50 mm.

Initial speed, u = 1 m/s

Initial distance, x = 0.5 mm

We need to find the height reached by the flea. Using third equation of motion to find it.

At maximum height, its final speed, v = 0

$v^2-u^2=2ah$

Here, a = -g

$-u^2=-2g(h-x)\\\\1^2=2\times 9.8\times (h-0.5\times 10^{-3})\\\\h=0.052\ m$

h = 5.2 cm

So, the flea will reach to a height of 5.2 cm.

6 0

3 years ago