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 three classes of rocks are sedimentary, metamorphic, and igneous. how are rocks classified into one of these three groups?

Vi. on another planet, a spring with constant 4.7 n/m is set up and allowed to expand verticaly freely. 8.4kg mass is placed on the spring and the spring extends 5.28m. calculate the exected extension on earth.

What radiation has a higher frequency than visible light