In lab you find that a 1kg rock suspended above water weights 1ON .when the rock is suspended beneath the surface of the water, the scale reads 8N. (a) what is the buoyant force on the rock ?
(b) if the container of water weights 10N on the weighing scale , what is the scale reading when the rock is suspended beneath the surface of the water?
(c) what is the scale reading when the rock is released and rest at the bottom of the container ?

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Hi.the measurement  amperes represents the rate at which current flows.it's like the measurement of water flowing through a pipe.~

Stars are born within the clouds of dust and scattered throughout most galaxies. a familiar example of such as a dust cloud is the orion nebula. turbulence deep within these clouds gives rise to knots with sufficient mass that the gas and dust can begin to collapse under its own gravitational attraction. as the cloud collapses, the material at the center begins to heat up. known as a protostar, it is this hot core at the heart of the collapsing cloud that will one day become a star. three-dimensional computer models of star formation predict that the spinning clouds of collapsing gas and dust may break up into two or three blobs; this would explain why the majority the stars in the milky way are paired or in groups of multiple stars.therefor, i would say the answer is: dust and gases contract.i hope this ! < 3