Aball rolls along a smooth horizontal floor at 10 m/s, then starts up a 20 degree ramp. how high does it go before rolling back?

How does litmus paper indicate an acid?

When determining the shape of a molecule, it is important to draw a lewis dot structure first in order to see the total number a. electrons within the moleculeb. bonding and unshared pairs around central atomc. unshared pair within the molecule( i really need it )

What’s the scientific notation for the number 6,840,000,000