Acurrent in a secondary coil is induced only if: the primary coil carries a steady current. the magnetic field is in motion with respect to the coil. the magnetic field is perpendicular to the conductor. the primary coil contains more turns.

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

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Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?