Density

What will be an ideal response?


a property of all matter, minerals included

Physics & Space Science

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A source emits sound at a fixed constant frequency f.If the source moves away from you faster than the speed of sound in air, you do not hear any frequency but instead a ‘sonic boom.'

a. True b. False Indicate whether the statement is true or false

Physics & Space Science

When considering human metabolism in terms of the 1st law of thermodynamics, which of the following represents the metabolic rate?

a. ?U / ?t b. ?Q / ?t c. W / ?t d. ?W / ?t

Physics & Space Science

An airplane flies in a horizontal circle of radius 500 m at a speed of 150 m/s. If the plane were to fly in the same 1000 m circle at a speed of 300 m/s, by what factor would its centripetal acceleration change?

a. 0.25 b. 0.50 c. 1.00 d. 2.00 e. 4.00

Physics & Space Science

Your instructor rides on a merry-go-round turning at a constant rate. In which direction does the net force on your instructor point?

a. down b. tangent to the circular path c. away from the center d. toward the center

Physics & Space Science