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Questions in Grade Middle-school

[Answered] Predict what the mass would be of an object exerting a force of 45 N on a spring scale. Explain how you determined your answer.

[Answered] When a plant grows, its mass increases over time. Does this mean that new matter is created? Why or why not?

[Answered] Tom read that on January 1, Earth is slightly closer to the sun than on July 1. Why, then, is it colder in January than in July?

[Answered] The choir director set up chairs for the concert with an equal number of rows and columns. The number of chairs in each row and column is represented by \( y \), where \( y \) is the total number of chairs. What is the number of chairs in each row and column if \( y = 81 \) chairs?

[Answered] Earth is the third planet from the sun. Which two planets are closer to the sun than Earth is?

[Answered] What is the root or base of the word "illegal"?

[Answered] Using the break apart method, find the product of [tex]3 \times 5[/tex]. What is the method?

[Answered] Apply the concept of density to explain why oil floats on water.

[Answered] Why were 19 young women executed in 1692 in Salem, Massachusetts?

[Answered] What is the rate and ratio of 420 miles in 7 hours?