(Q).
Q: Destructive interference in waves occurs when what things overlap? Read this paragraph and choose the correct option from the provided answers: Destructive interference in waves occurs when two troughs overlap. Choices: - two waves - three waves - three troughs - two troughs A:
(A).
two troughs

(Q).
Q: Elements are either metals, nonmetals, or what? Read this paragraph and choose the correct option from the provided answers: Elements are either metals, nonmetals, or semimetals. Each group is located in a different part of the periodic table. Another way to categorize the elements of the periodic table is shown in Figure 2.9 "Special Names for Sections of the Periodic Table". The first two columns on the left and the last six columns on the right are called the main group elements. The ten-column block between these columns contains the transition metals. The two rows beneath the main body of the periodic table contain the inner transition metals. The elements in these two rows are also referred to as, respectively, the lanthanide metals and the actinide metals. Figure 2.9 Special Names for Sections of the Periodic Table. Choices: - reactive metals - partial metals - unstable metals - semimetals A:
(A).
semimetals

(Q).
Q: Which law explains why a ship weighing thousands of metric tons floats on water? Read this paragraph and choose the correct option from the provided answers: Do you see the man sitting on top of this tanker truck? He gives you a sense of how big the truck is. What's behind the truck? Is it a huge apartment complex? It's just as massive as a very large building, but it's not even resting on land. It's a giant cruise ship, and it's floating on water. The ship weighs about 100,000 metric tons. How can such a tremendous weight float on water? Why doesn't it sink to the bottom of the ocean instead? Archimedes' law explains why. Choices: - hofstadter ' law - ganymede ' law - water pressure law - archimedes' law A:
(A).
archimedes' law