During the approach of a severe thunderstorm, workers on a project see lightning and then hear the resulting thunder 5.0 s later. How far away, in kilometers, is the storm?
1.7 km
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The element rubidium (Rb, atomic number 37) is in Group IA of the periodic table, thus the chemical bonding should be ______________.
Fill in the blank(s) with the appropriate word(s).
Torque: A force of 17 N is applied to the end of a 0.63-m long torque wrench at an angle 45° from a line joining the pivot point to the handle. What is the magnitude of the torque about the pivot point produced by this force?
A. 7.6 N ? m B. 10.7 N ? m C. 12.0 N ? m D. 9.7 N ? m
The asthenosphere is the region of Earth directly below the ______________
Fill in the blank(s) with correct word
The magnetic permeability of a ferromagnetic material is
A) much less than ?O. B) slightly less than ?O. C) much greater than ?O. D) the same as ?O. E) slightly more than ?O.