Susan is making an electromagnet in her science class today. First, she takes a nail and winds coils of copper wire around it then, she
connects the ends of the wire to a battery. She uses the electromagnet to pick up paper clips, but the paper clips drop when she
disconnects the wires from the battery, Which kind of energy does Susan change into magnetic energy in this project
chemical
electrical
heat
light

Which type of bond is found between the atoms of a molecule? a. metallic b. delocalized electron c. covalent d. ionic

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z

Amichelson interferometer operating at a 600 nm wavelength has a 3.02-cm-long glass cell in one arm. to begin, the air is pumped out of the cell and mirror m2 is adjusted to produce a bright spot at the center of the interference pattern. then a valve is opened and air is slowly admitted into the cell. the index of refraction of air at 1.00 atm pressure is 1.00028.how many bright-dark-bright fringe shifts are observed as the cell fills with air?