Salt water is more dense than fresh water. A ship floats in both fresh water and salt water. Compared to the fresh water, the volume of water displaced in the salt water is
Answer: less
A piece of wood is floating in a bathtub. A second piece of wood sits on top of the first piece, and does not touch the water. If the top piece is taken off and placed in the water, what happens to the water level in the tub?
A piece of wood is floating in a bathtub. A second piece of wood sits on top of the first piece, and does not touch the water. If the top piece is taken off and placed in the water, what happens to the water level in the tub?
Answer: It does not change
One day, while swimming below the surface of the ocean, you let out a number of bubbles of air from your mouth. As the bubbles rise toward the surface, their diameters will
One day, while swimming below the surface of the ocean, you let out a number of bubbles of air from your mouth. As the bubbles rise toward the surface, their diameters will
Answer: increase
The SI unit of pressure is
The SI unit of pressure is
Answer: Pa, N/m^2, kg/m^2/s^2
In the ideal gas formula, temperature must be measured in what unit?
In the ideal gas formula, temperature must be measured in what unit?
Answer: K
A rock is suspended from a scale reads 10.0 N. A beaker of water is raised up so the rock is totally submerged in the water. The scale now reads 6.25 N. What is the density of the rock?
A rock is suspended from a scale reads 10.0 N. A beaker of water is raised up so the rock is totally submerged in the water. The scale now reads 6.25 N. What is the density of the rock?
Answer: 2.67 times the density of water
How many atoms are there in a mole of Hydrogen (H2) gas?
How many atoms are there in a mole of Hydrogen (H2) gas?
Answer: 1.20×10^24
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