Objects 1 and 2 attract each other with a gravitational force
of 18.0 units. If the mass of Object 1 is doubled AND the
distance separating Objects 1 and 2 is doubled, then the
new gravitational force will be
units.

i need the answer to this too but idk it ; -;

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers

the aurora is formed when charged particles emitted from the sun during a solar flare penetrate the earth's magnetic shield and collide with atoms and molecules in our atmosphere. these collisions result in countless little bursts of light, called photons, which make up the aurora.

auroras are generated by charged solar particles hitting molecules in earth's atmosphere. this usually happens in high latitudes, because our planet’s magnetic field tends to funnel these particles toward the poles. that’s why it can be experienced in northern ohio.