Some of the principal minerals commonly found in igneous rocks are a) calcite and quartz. b) clay minerals and feldspars. c) quartz, feldspar, and mica. d) ferromagnesian minerals and clays

The density of a liquid could be found by using

You have a resistor and a capacitor of unknown values. first, you charge the capacitor and discharge it through the resistor. by monitoring the capacitor voltage on an oscilloscope, you see that the voltage decays to half its initial value in 2.70 miss . you then use the resistor and capacitor to make a low-pass filter. what is the crossover frequency fc?

Observations show that interstellar clouds can have almost any shape and