Arwan finds a piece of quartz while hiking in the mountains. when he returns to school, he takes it to his science teacher. she him determine the mass to be 788.9 g. she also tells arwan that the density of quartz is 2.6 g/cm3. what is the volume of arwan's piece of quartz? 0.003 cm3 303.4 cm3 339.5 cm3 2,051.1 cm3

How many seconds does it take a pebble released from rest off a bridge to fall 29.4 m ? what is the pebble's speed when it has fallen 29.4 m ?

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 11.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.80 m/s; (b) he is then lifted at the constant speed of 4.80 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 78.0 kg rescue by the force lifting him during each stage

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid