Question

22.A hunter, attempting to cross a dry riverbed, steps into deep quicksand. He is carrying a heavy elephant rifle. He has a mass of 75,000 grams and a volume of 75,000 cubic centimeters. The combined density of the hunter plus the gun is 1.15 grams per cubic centimeter. If the quicksand has an average density of 1.1 grams per cubic centimeter, which of the following statements is true?Select one:a. He will float if he uses his rifle like a log and stands on it.b. He will continue sinking no matter what he does with the rifle.c. He will float only if he drops his rifle.d. He will float even if he keeps his rifle.

Answer 1

c. He will float only if he drops his rifle.

Step-by-step explanation

If the rifle has a mass of 75,000 grams and a volume of 75,000 cubic centimeters and the combined density of the hunter plus the gun is 1.15 grams per cubic centimeter, then the density of the hunter is 0.15 grams per cubic centimeter and the density of the rifle will be 1.0 grams per cubic centimeter.

If the quicksand has an average density of 1.1 grams per cubic centimeter, therefore, the only statement which is true is:

c. He will float only if he drops his rifle.

This is because he is less dense than the quicksand without the rifel