Utilizing Lorentz factor;
Lorentz factor = Sqrt (1-u^2/c^2), where u = initial velocity, c = speed of light
But, u/c = 0.960
Therefore,
Lorentz factor = Sqrt (1-0.960^2) = 0.28
For an observer,
t = (Distance to the star*Lorentz factor)/ (u/c) = (14.4*0.28)/0.96 = 4.2 years
Answer: The average speed is 5.71 m/s
Explanation:
The average speed in this run will be the quotient between the total distance that the runner traveled, and the total time it took.
Distance = 400m + 400m + 800m = 1600m
Time = 80s + 70s + 130s = 280s
Then the average speed is:
S = 1600m/280s = 5.71 m/s
Answer:
23.38 years
Explanation:
Speed of Allison = 0.83 c = v
Time passed according to Allison = Δt = 29.5 years
Time dilation

For Nora 52.88 years would have passed
So, their age difference would be 52.88-29.5 = 23.38 years
Answer:
Explanation:
Given
Length of cable 
Diameter of cable 
time taken to return to original position 
time taken to cover distance L

velocity

(b)Relation between velocity of wave Tension is
mass per unit Length



where 



Answer:
Galileo
Explanation:
Galileo Galilei pioneered the experimental scientific method, and was the first to use a refracting telescope to make important astronomical discoveries. He is often referred to as the "father of modern astronomy" and the "father of modern physics". Albert Einstein called Galileo the "father of modern science."