Answer: Hydrogen and Helium > Hydrogen compounds > Rocks > Metals
Explanation: The solar nebular system contains 98% Light Gases of both Hydrogen and Helium (produced in the Big Bang); followed by 1.4% of Hydrogen Compounds including water, methane, and ammonia; then followed by 0.4% of Rocks like Silicates; and lastly 0.2% of Metals including Iron, Nickel and Aluminium.
Increase .... decrease .... presumably it's the "best shape" for a body which has been formed by the gravitational force
Answer:
so you have a question
Explanation:
either way,you have a nice day
Q in = Q out
0.25 x 4200 x (90-t)=0.05 x 4200 x (t-0)
1050 (90-t)=210t
94500-1050t=210t
94500=1260t
t=75°
I believe the answer is A