The model of the solar system changed, because
a. understanding of the solar system changed.<...
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Physics, 22.06.2019 07:50
Calculate the ratio of h+ ions to oh– ions at a ph = 6. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 6. are they the same? why or why not? record your explanation in table a. what is the concentration of h+ ions at a ph = 6? mol/l what is the concentration of oh– ions at a ph = 6? mol/l what is the ratio of h+ ions to oh– ions at a ph = 6? : 1
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Physics, 22.06.2019 11:20
The ultracentrifuge is an important tool for separating and analyzing proteins. because of the enormous centripetal accelerations, the centrifuge must be carefully balanced, with each sample matched by a sample of identical mass on the opposite side. any difference in the masses of opposing samples creates a net force on the shaft of the rotor, potentially leading to a catastrophic failure of the apparatus. suppose a scientist makes a slight error in sample preparation and one sample has a mass 10 mg larger than the opposing sample. if the samples are 12 cm from the axis of the rotor and the ultracentrifuge spins at 70,000 rpm, what is the magnitude of the net force on the rotor due to the unbalanced samples? ( be thorough on your answer)
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Physics, 22.06.2019 15:30
What is a subatomic particle with a negative charge and very little mass?
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Mathematics, 18.12.2020 05:20
Mathematics, 18.12.2020 05:20
Mathematics, 18.12.2020 05:20
History, 18.12.2020 05:20
Mathematics, 18.12.2020 05:20
Mathematics, 18.12.2020 05:20
Mathematics, 18.12.2020 05:20
Mathematics, 18.12.2020 05:20
Mathematics, 18.12.2020 05:20
Mathematics, 18.12.2020 05:20
Mathematics, 18.12.2020 05:20