How can you know a chemical change has occurred? The substance solidifies
The substance shatters
The substance catches on fire
The substance melts

What causes the development of most clouds and precipitation in the atmosphere?

Orque can be calculated by multiplying the force (n) applied at 90∘ to the lever arm at a distance (m) from the pivot point (point of rotation), the compound si unit for the torque is n⋅m. if the force (at 90∘ to the lever arm) applied is 15 n and it is applied at 2.0 m from the pivot point (point of rotation), what is the torque on the lever?

How many minutes does light need to travel from the sun to jupiter?