Answer:
n=2.053
Explanation:
We will use Snell's Law defined as:

Where n values are indexes of refraction and
values are the angles in each medium. For vacuum, the index of refraction in n=1. With this we have enough information to state:

Solving for
yields:

Remember to use degrees for trigonometric functions instead of radians!
The answer is A because it gives you a straight line which would make it easy for you go just go to end fast as a car .
To solve this problem it is necessary to apply the equation related to the Gravitational Force, the equation describes that

Where,
G = Gravitational Universal Constant
M = Mass of Earth (or Bigger star)
m = Mass of Object (or smallest star)
r = Radius
From the statement we know that once the impact is made, the golf ball is subjected to the forces that are exerted in nature. Since the air resistance, which would represent the drag force, is ignored. Only the forces related to gravity remain.
The gravitational force carries 'pushes' or 'attracts' the body towards the earth, while the speed decreases as it reaches its maximum height.
When the ball has reached its maximum height only the force of gravity begins to act on it, generating the attraction to the earth in parabolic motion.
Therefore the correct answer is B.
The combined
gas law does not account for changes in power. The combined gas law has no official founder; it is simply
the incorporation of the three laws that was discovered. The combined gas law
is a gas law that combines Gay-Lussac’s Law, Boyle’s Law and Charle’s Law. Boyle’s law states that pressure is inversely
proportional with volume at constant temperature. Charle’s law states that
volume is directly proportional with temperature at constant pressure. And
Gay-Lussac’s law shows that pressure is directly proportional with temperature
at constant volume. The combination of these laws known now as combined gas law
gives the ratio between the product of pressure-volume and the temperature of
the system is constant. Which gives PV/T=k(constant). When comparing a
substance under different conditions, the combined gas law becomes P1V1/T1 =
P2V2/T2.
The time taken by a person that is walking at 2 meters per second to travel 1200 meters is 600 s
v = d / t
v = Velocity
d = Distance
t = Time
v = 2 m / s
d = 1200 m
t = d / v
t = 1200 / 2
t = 600 s
Velocity is the rate of change of distance with respect to time. It is denoted using V. Its unit is usually m / s.
Therefore, the time taken by thy person is 600 seconds
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