How does the heat move through the space between the sun and the earth? match the heat transfer mechanisms in space and on earth with the correct description.

the choices are
1. electromagnetic waves transfer energy through space to earth
2. heat energy on earth escapes into space
3. moves from warmer to cooler
4. touching, direct contact
5. warm air circulates towards cooler polar regions
6. flow of heat energy through liquids and gases
7. heat energy transferred
8. responsible for weather patterns on earth
9. transfer of heat through soil by the movement of molecules
10. warm air in atmosphere rises and is replaced by cooler air

These models show the electron structures of two different nonmetal elements. which element is likely more reactive, and why? element 1 is more reactive because it has fewer electron shells and is toward the top of its group on the periodic table. element 1 is more reactive because it has more electrons in its valence shell and is farther to the right on the periodic table. element 2 is more reactive because it does not have a valence shell close to the nucleus, so it will attract electrons. element 2 is more reactive because it does not have a full valence shell, so it will attract electrons.

Aregular polygon has angkes of size 150° each.how many side has the polygon

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)