Q: Q: Since eddy currents and magnetic damping occur only in conductors, recycling centers can use these to separate metals from other materials? A:

OPTIONS:
- particles
- cranes
- alloys
- magnets

A: magnets

Q: Q: How do you determine the atomic weight of an element? A:

OPTIONS:
- multiply protons and neutrons
- subtract protons from electrons
- divide protons and neutrons
- add up protons and neutrons

A: add up protons and neutrons

Q: Q: The ratio between the radii of a wheel and axle determines what? A:

OPTIONS:
- fundamental mechanical advantage
- introduced mechanical advantage
- theoretical mechanical advantage
- ideal mechanical advantage

A: ideal mechanical advantage

Q: Q: Dna consists of how many long chains of nucleotides? A:

OPTIONS:
- three
- zero
- one
- two

A:
two