What came before the big bang is one of the primary unanswered questions about the origin of _____.

Answers

Answer 1
Answer:

Answer: The correct answer for the blank is- Origin of universe.

Big band theory is an explanation about the origin of universe ( that is how universe began or the birth of universe).

Big Bang theory states that all matter ( including past and present time) in the Universe have come into existence at the same time, that is approximately about  13.8 bya ( billion years ago).

At that particular time, all matter was in the form of very small ball ( that is a compact form) with infinite density and excess heat, which is known as a Singularity.

All of a sudden, the singularity started expanding, and the universe that we know today originated.

Answer 2
Answer:

Answer:

Universe

Explanation:


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two plane mirrors are at right angles to each other. a man stands between them and combs his hair with his right hand. in how many of the images will he be seen using his right hand? none 1 2 3

Answers

Explanation:

In the first two images the comb would be in the left hand of the man. The image which appears in between those two images has the comb in its right hand. Therefore, the images in which he will be seen using his right hand is one.

A 75 force is applied to the side of a crate resting on a level floor. The crate has a mass of 25kg. If the coefficient of static friction is .15, is the 75 N force enough to make the crate accelerate? Explain why or why not.

Answers

If the coefficient of static friction is 0.15, then 0.15 of the crate's weight
shows up as a force resisting the horizontal pull.  So we really only
need to know the crate's weight.

Weight = (mass) x (gravity)  =  (25) x (9.8)  =  245 newtons.

0.15 of 245 newtons  =  36.75 newtons.

The force due to friction that's holding the crate back, not letting it start
sliding, is 36.75 newtons.  If you push it with 75 newtons of force, then
that  IS  enough to make the crate accelerate. 

What is the unit of mu (m) in the equation of Ffriction=miu F formal explan

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Both F's are forces, so µ must be unitless/dimensionless.

F[friction] = µ F[normal]

Or, more explicitly in terms of the units:

(Newtons) = (constant) (Newtons)

What is the source of geothermal energy? User: What is the source of geothermal energy?A. sunlight heating surface waters
B. the splitting of atoms to release energy
C. natural underground reservoirs of steam and hot water
D. very hot minerals deep underground

Answers

The answer is; C

In particular points in the earth’s surface, underground water is naturally heated to steam that can be harness for geothermal energy. The steam that ejects from the ground with high kinetic energy can be used to turn turbines that generate electricity. The underground water is usually heated by the hot rocks beneath that are subjected to the immense heat of magma or the enormous pressure of overlying crust.  


ANSWER

C. natural underground reservoirs of steam and hot water.

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What's a solution that feels slippery

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What are you exactly asking for? A solution that feels slippery? That could mean anything. Please explain a little bit more.

suppose that you look into a photometer's eyepiece and the fluorescent disks appear to be equal in intensity. If the distance between the photometer to lamp 1 is 400mm, the distance between the photometer to lamp 2 is 200 mm, and the intensity of lamp 2 is known to be 15 candelas, what is the intensity to lamp 1?

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Use the Inverse square law, Intensity (I) of a light is inversely proportional to the square of the distance(d).

I=1/(d*d)

Let Intensity for lamp 1 is L1 distance be D1 so on, L2 D2 for Intensity for lamp 2 and its distance.

L1/L2=(D2*D2)/(D1*D1)

L1/15=(200*200)/(400*400)
L1=15*0.25
L1=3.75 candela