A light bulb has a power output of 80 W and it has been left on for 90 seconds. How much work was done?

7200 joules of heat and light energy was dissipated into the air. But no work was done ... no force moved through no distance.

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.

answer( sicar );