Some satellites move around Earth in polar orbits, that is, in a north to south direction, rather than west to east. Can scientists who want to put a satellite into a polar orbit take
advantage of Earth’s rotation to give the rocket a “boost”? Explain.

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The air that we breath is made mostly of which gaseous molecule

1.)the isotope cobalt-60 has a nuclear mass of 59.933820 u calculate the mass defect of cobalt-60 using the following information. mass of proton: 1.007825 u mass of neutron: 1.008665 u 1 u = 931.5 mev 2.)the isotope cobalt-60 has a nuclear mass of 59.933820 u calculate the binding energy of cobalt-60 using the following information. mass of proton: 1.007825 u mass of neutron: 1.008665 u 1 u = 931.5 mev 3.)the isotope cobalt-60 has a nuclear mass of 59.933820 u calculate the binding energy per nucleon of cobalt-60 using the following information. mass of proton: 1.007825 u mass of neutron: 1.008665 u 1 u = 931.5 mev

Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.