how did planetesimal form planets? a.) they broke apart to smaller chunks b.) they collied and stuck together c.) they colled and pulled ice together d.) they began to rotate what...

how did planetesimal form planets? a.) they broke apart to smaller chunks b.) they collied and stuck together c.) they colled and pulled ice together d.) they began to rotate what...

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A cylinder contains 250 g of Helium at 200 K. The external pressure is constant at 1 atm. The system experiences an evolution of heat and the temperature change is 55 K. Calculate q. Express...

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You are given a piece of metal alloy that is made of tin and copper. If the density of the sample is found to be 8.59 g/mL what is the % Sn and % Cu in the sample?

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