Answer:
Star A would be brighter than Star B
Explanation:
The apparent brightness of a star as perceived on Earth is dependent on its temperature, size, luminosity and distance from the Earth. Apparent brightness is the visible brightness to the eye at the surface of the Earth, while luminosity is the true brightness at the surface of the star.
A hotter star will radiate more energy per second per meter square of surface area. A larger star will have a greater surface area for radiation of energy, thus increasing the luminosity. For two identical stars, the difference in apparent brightness will be dependent on their distances from Earth.
Brightness and distance from earth have an inverse square relationship.
∝
Assuming the star is a point source of radiation, as distance from the source is increased, the radiation is distributed over a surface proportional to the distance form the source. As distance is further increased, the radiation is distributed over a larger surface area reducing the effective luminosity.
If one star (Star B) is twice as far from the earth as the first (Star A), the brightness of Star B will be of Star A.
Thus, Star B will appear to be a quarter of the brightness of Star A. Or, Star A will appear to be 4 times as bright as Star B.
Answer:
E(1m) = 4*E(2m)
Explanation:
By definition, an electric field is the electric force per unit charge, produced by a given charge distribution.
For a point charge, it is the electric force produced by the charge, over a positive test charge located at a distance d from the charge.
So, the E at a point 2 m away from the charge q, can be expressed as follows:
At a point 1 m from the charge, the value of E is given by the following equation:
As it can be easily seen, the magnitude of the electric field at 1 m from the charge creating it, is 4 times larger than the one at 2 m.
This is due to the electrostatic force obeys an inverse-square law, consequence of our universe be three-dimensional.
Answer:
Promotes Cardiovascular Health. ...
Burns Calories. ...
Builds Bone Strength. ...
Boosts The Immune System. ...
Provides Strength Training. ...
Boosts Mental Development. ...
Develops Better Coordination And Motor Skills. ...
Develops Self-Discipline And Concentration.
Explanation:
Answer:
The correct answer is singing. See the explanation below, please.
Explanation:
The right cerebral hemisphere deals with functions related to emotion: musical, artistic, imagination, intuition. On the other hand, the left hemisphere is related to language, reasoning, numerical and scientific ability.