In addition to possibly releasing harmful chemicals in the environment, mining is considered
a. the least dangerous job in the united states.
b. the most dangerous job in the united states.
c. the least lucrative job in the united states.
d. the most lucrative job in the united states.

When applying kirchhoff's rules, one of the essential steps is to mark each resistor with plus and minus signs to label how the electric potential changes from one end of the resistor to the other. the circuit in the drawing contains four resistors, each marked with the associated plus and minus signs. however, one resistor is marked incorrectly. which one is it?

The heliocentric and the geocentric models of the solar system included these central principles

Aflute player hears four beats per second when she compares her note to a 523 hz tuning fork (the note c). she can match the frequency of the tuning fork by pulling out the “tuning join” to lengthen her flute slightly. what was her initial frequency?