Answer:
D. Frozen water is less dense than liquid water.
Explanation:
Titanic sank in the North Atlantic Ocean in the year 1912. There were more than 2000 passengers on board from which about 1500 died.
Frozen water that is ice has less density than liquid water. The density of ice is and the density of the water is
.
Due to this very slight difference in density, ice floats on water. Titanic, on the night of April 14, 1912, crashed into an iceberg around midnight which caused opening of 5 of its watertight compartments. The water filled into the ship and it eventually sank in.
Answer:
1000 N
Explanation:
Let v be the his horizontal speed when he releases the vine and t be the time it takes for him to fly across the swamp and land.
Assume
When he releases the vine, there's only gravity acting on him downward. There's also no vertical velocity at this point.
Therefore, for him to travel 5 m vertically:
Horizontally we have
For Tarzan to achieve this horizontal speed, the centripetal acceleration and force exerting on the vine at the instant before he let go must be