How many different values can digital signals take on? Any value .

Two values : and 1.

Only specific values .

Any value between 1 and 10.

What are the starting materials for nuclear fission? two small nuclei two large nuclei a neutron and a large nucleus a neutron and a small nucleus

When can a theory be modified if a new type of technology allows for new observations that raise new questions? a-immediately, while the questions about the theory are being asked b-after new hypotheses related to the theory are tested in experiments c-only after the new observations disprove all parts of the theory d-while scientists begin to think about how the theory could improve

What does every magnet possess? a. iron metal b.strong magnetic field c.repulsion d.north and south poles