Answer:
Heyo! (Ish Mash Potato) XD
Explanation:
A conceptual model is a representation of a system, made of the composition of concepts which are used to help people know, understand, or simulate a subject the model represents. It is also a set of concepts. Some models are physical objects; for example, a toy model which may be assembled, and may be made to work like the object it represents.
Hope Mr. Mash Potato Helped!!!
Not only astronomers, but all scientists use the technique of rock dating to determine the age of the universe. From the Big Bang Theory, all the celestial bodies were made at the same time. So, the age of the Earth is just the same with the age of the universe. So, they gather rocks deep down in the crust of the Earth and let it undergo radioactive decay. By determining the amount of radioactive material left and half-life, they could compute the age of the Earth.
The answer in the first space provided is realistic whereas
the second space provided is fantastic. The correct answer would be letter B.
In realistic, it has many views in which the frame is the
window on the world whereas fantastic depicts imagination or remotes from
reality.
An object's gravitational potential energy is
(mass) x (gravity) x (height above ground) .
I don't see the object's speed anywhere in that formula, do you ?
An object's speed has no effect whatsoever on its potential energy ... only if it changes the object's height above ground.
Answer:

Explanation:
Previous concepts
The Thermal radiation is one of "3 mechanisms who allows to bodies exchange energy".
The thermal radiation formula is given by:

Where 
If we solve for P we got:

Since we have a baseball ball considered as a sphere the superficial area is given by:

Solution to the problem
And if we replace this into our equation of P we got:

And we can reorder this like that:

We can convert the radius to meters and we got:

Now we can convert the temperature to Kelvin and we got:

the emissivity given
And now we can replace into the formula for P and we got:

