The speed of sound in air is approximately 340 m/s. The speed of light in air is approximately 3 x 10^8 m/s. If a lightning strike occurs three kilometers away, how much time elapses before you hear the thunder?

What will be an ideal response?


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Manufacturers that produce both smart phones and tablets typically replicate the ____________ on both devices.

Fill in the blank(s) with the appropriate word(s).

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Given the partial traverse shown in Figure P7–10, place the following items in the table:

Bearing of each property line (course) Distance of each course ? Cosine of each bearing angle Sine of each bearing angle Latitude of each course ? Departure of each course

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Forests are important because they are part of our _____

a. families c. ecosystem b. neighborhoods d. industries

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Which of the following would be an impurity to pure silicon?

A. Gallium B. Germanium C. Geranium D. Cathodes

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