A moon orbits a planet in a nearly circular orbit of radius R, as shown in the figure. The moon has a mass of 1×1022 kg, and the gravitational field strength at a distance R from the planet is 0.001 N/kg. What is the gravitational force exerted on the moon while it is in orbit around the planet?

0 N

0 newtons
A

1×1019 N

1 times 10 to the power of 19 newtons
B

1×1022 N

1 times 10 to the power of 22 newtons
C

1×1025 N

it is a negative acceleration

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.