For this case, in the next item we have gravitational potential energy:
An apple in a tree.
Suppose we define our reference system at the floor level.
Suppose the apple is at a height h from the floor and has mass m.
The gravitational potential energy of the apple is given by:
U = mgh
Where,
m: apple mass
h: height of the apple with respect to the floor
g: acceleration due to gravity
Answer:
C) an apple on a tree
Answer:
Retina is the part of eye which is used to see things in high details
Answer:
Approximately 
.
Explanation:
Let 
denote the gravitational constant. (
.)
Let 
and 
denote the mass of two objects separated by 
.
By Newton's Law of Universal Gravitation, the gravitational attraction between these two objects would measure:
.
In this question: 
is the mass of the moon, while 
is the mass of the water. The two are 
apart from one another.
Important: convert the unit of to standard units (meters, not kilometers) to reflect the unit of the gravitational constant .
.
.
That is not a question but not all scientific theories have stood the test of time
Answer:
Sa
Explanation:
Spiral Galaxies -
It is a disk shaped galaxies which have spiral structure , is refereed to as spiral galaxies .
According to Hubble , these galaxies are classified as Sa , Sb , Sc .
Where ,
Sa - have the structure , which is bulged from the central portion , along with a tightly wrapped spiral structure .
Sb - have a lesser bulge and the spiral is looser .
Sc - It has very weak bulge with the open spiral structure .
Hence , from the question ,
The given information is about the Sa .
