What do stars begin as
2 answers:
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Answer:
The value is
Explanation:
From the question we are told that
The mass of the ball is
The initial speed of the ball is
The spring constant is
The compression distance is
Generally the energy stored in the string is mathematically represented as
=>
=>
Generally the kinetic energy of the ball is mathematically represented as
=>
Generally the KE the ball have when it has compressed the spring is mathematically represented as
=>
=>
The distance of earth from sun is 150 million km
We know that one million = 10^6 and 1 km= 10^3 m
Hence 150 million km = 150× 10^6 ×10^3 metre=150×10^9 m
=1.5×10^11 m
The speed of light in vacuum is 2.999... m/s which can be approximately close to 3.0 ×10^8 m/s
We are asked to calculate the time taken by the light beam to reach from sun to earth.
we know that average velocity
⇒
Here distance=1.5×10^11 m and v=c= 3.0×10^8 m/s
hence time
=0.5×10^3 s
=5.0×10^2 s
A correct scientific notation is written as m×10^n [Here m is the magnitude and n is power of 10]
Hence the value of m =5 and value of n =2