Gabriella weighs 450 n. she climbs a flight of stairs to a height of 3 m. it takes her 5 seconds. how much work does gabriella do when she climbs the stairs?

a.
150 j

b.
270 j

c.
1350 j

d.
2250 j

What is the force of attraction between the particles in a salt crystal

  the mississippians were considered to be  horticulturalists, which means they were

Some familiar products contain some of the same types of atoms. for instance, the chemical formula for baking soda is nahco 3. the chemical formula for liquid bleach is naclo, and the chemical formula for table salt is nacl. which choice best describes why these three products have some of the same types of atoms in common?