Suppose that several projectiles are fired upward. Which one will be in the air longest? (R is range, h is highest elevation, and t is time of flight.)

A) The one with the farthest range, R
B) The one with the highest maximum elevation, h
C) The one for which the product of (R)(t)(h) is maximum
D) The one with the greatest initial velocity
E) The one with the minimum elevation, h


B

Physics & Space Science

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A common property of all waves is the relationship between the speed (v), the wavelength (?), and the frequency of the wave (f). The correct equation for this relationship is which of the following?

A. v = f/? B. v = f? C. ? = vf D. f = v?

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A) human life B) plant life C) microbial life only D) any kind of life

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The atomic mass unit is based on the mass of the ________ atom.

What will be an ideal response?

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