Brielle rubbed a plastic ruler on her hair. Her friend Maurice rubbed a beach ball on his shirt before placing it on a table. What will happen as Brielle slowly moves the ruler closer to the beach ball?

Astudent creates a model of a closed ecosystem by filling a glass tank half full with water, then adding 10 snails and two small aquatic plants. the next day, all the snails are dead. what is the most likely cause of their death?

Aphoton is absorbed by an electron that is in the n = 3 state of a hydrogen atom, causing the hydrogen atom to become ionized. very far away from the nucleus, the released electron has a velocity of 750,000 m/s. what was the wavelength of the absorbed photon?

What are the dimensions of the cross section that passes through the points a, f, g, and d?