q10. an object with a density of 0.4 grams/ml will float in water.(hint: density of water is 1…

q10. an object with a density of 0.4 grams/ml will float in water.(hint: density of water is 1 gram/ml)\ntrue\nfalse\nq11. if you mix hot water and cold water, which water floats on top?\nhot water\ncold water\nneither
Answer
Explanation:
Step1: Recall density - float rule
Objects with density less than water float.
Step2: Compare densities
Given object density is 0.4 g/mL, water density is 1 g/mL. Since 0.4 < 1, it floats. So Q10 is True.
Step3: Recall density - temperature relationship
Hot water is less dense than cold water. Less - dense substances float on more - dense ones. So hot water floats on cold water in Q11.
Answer:
Q10. A. True Q11. A. Hot water