Using the phosphorus data from the table, calculate the percentage of each phosphorus source that enters the Mississippi from the city of St. Paul.

Answer/Explanation:

% of each Nitrogen source = amount of Nitrogen from each source/total amount if Nitrogen × 100

% of Nitrogen from atmospheric deposition:

Approximately 18%

% of Nitrogen from household pet waste:

Approximately 28%

% of Nitrogen from residential fertilizer:

Approximately 51%

% of Nitrogen from weathering:

0%

% of Nitrogen from county compost:

Approximately 3%

it would take 95 years for that supernova to be visible on earth, so the year would be about 2113. i hope i did my calculation right.

ek = (m·v2) / 2

v - velocity of system after the collision

m = m1 + m2

ek = (m1 + m2) ·v2/2

ek = (200 + 250) ·2,32/2 = 450·5,29/2 = 1190,25 j