Question

The lifetime of a star can be estimated in "solar lifetimes" by dividing 1 by the mass of the star, raised to the 2.5 power (T-1/M5 where mass is given in solar masses. What is the expected lifetime of a star that has three times the mass of the Sun? 7-[)solar lifetimes

Answer 1

Answer:B

Step-by-step explanation:

Answer 2

641500299.1 years

Step-by-step explanation:

Stellar lifetime

`\tau =10^(10)\left((M_s)/(M)\right)^(2.5)`

where,

`M_s` = Mass of sun

M = Mass of star =
`3M_s`

`\tau =10^(10)\left((M_s)/(3M_s)\right)^(2.5)\\\Rightarrow \tau=10^(10)\left((1)/(3)\right)^(2.5)\\\Rightarrow \tau=641500299.1\ years`

The expected lifetime of a star which is 3 times the mass of the sun is 641500299.1 years