Answer:
1600 years half life
3200/1600 is 2 half lifes
first half life takes the sample to 1/2 it's original amount and the second takes it to 1/4 of it's original amount
so 1/4*7gm is 1.75gm
Explanation:
Answer:

Explanation:
From the question we are told that
Distance 
Time
Time
Generally the the equation for the distance traveled is mathematically given as



Generally equation for speed of side walk is mathematically given as




Between the two asymptotic gigantic branches, the Sun changes the greatest in size, brightness, and temperature.
Answer:
no way to tell since the ocean surface is moving too violently it's not possible to determine the reflected angle