Answer:
what is that i connot understand your question
Explanation:
im sorry i connot answer your question
Answer: Atoms are the hardest substance to separate
The answers are
The age of the oldest stars
How fast distant galaxies are moving away from us
Patterns of background radiation.
Explanation:
The Astronomers calculate the age of the universe by looking for oldest stars, and by measuring the rate of expansion of the universe and back to big bang.
The Astronomers used the techniques like the age of oldest stars, how fast the distant galaxies are moving away from us, patterns of background radiation and along with the Big Bang as reference point, they estimate that the universe may be approximately 12 billion years old.
T=20 min
m₀=200 g
t=60 min
the mass of element through time t is:
m=m₀*2^(-t/T)
m=200*2^(-60/20)=25 g
25 grams of element will be left after 60 minutes
Answer:
The epic emotional journey of a suburban African American family as they navigate love, forgiveness and coming together in the wake of a tragic loss.
Explanation:
hope thsi helps if so please brainliest
Merry Christmas
