Lightning is dangerous to humans because lightning strokes

a. carry large currents. b. have high voltages.
c. have no resistance. d. fry whatever they hit.

a

Physics & Space Science

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A long nonconducting cylinder (radius = 12 cm) has a charge of uniform density (5.0 nC/m3) distributed throughout its column. Determine the magnitude of the electric field 5.0 cm from the axis of the cylinder.

A. 25 N/C B. 20 N/C C. 14 N/C D. 31 N/C E. 34 N/C

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Physics & Space Science

Because of their low surface gravities, the Moon and Mercury lack ________

Fill in the blank(s) with correct word

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Physics & Space Science

Which event would you expect to be most closely associated with regions of active star formation?

a. Type Ia supernovae b. Type Ib supernovae c. Type II supernovae d. novae e. planetary nebulae

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Physics & Space Science

The Higgs field is best described as a field that

a. explains why stable matter appears to be composed of fermions. b. particles interact with to acquire mass. c. governs the electroweak interaction. d. carries the strong force, carried by gluons. e. has been verified experimentally by many accelerators.

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Physics & Space Science