Help please

6. [-/10 Points] DETAILS OBINPHYS8 8.P.002. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The generator at a power plant produces AC at 30,000 V. A transformer steps this up to 295,000 V for transmission over power lines. If there are 2,200 turns of wire in the input coil of the transformer, how many turns must there be in the output coil? turns Need Help? Read It 7. [-/10 Points] DETAILS OBINPHYS8 8.P.004. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER What is the wavelength of the 71,500-Hz radio wave used by "radio-controlled" clocks and wristwatches? km Need Help? Read It 8. [-/10 Points] DETAILS OBINPHYS8 8.P.007. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Determine the range of wavelengths in the x-ray radiation band. Ox > 0.3 m O 0.3 m > 1 > 3 x 10 4m ( 3 x 10 4m > > > 7.5 x 10-7m ( 7.5 x 10 7m> > > 4x10 7m ( 4x10"7m> > > 3x 10-10 m (1x10 8m> > 1x10 1im Ox