A particular spectrometer has a B0 field which gives a Larmor frequency of 600 MHz for 1H;

Question:

A particular spectrometer has a B0 field which gives a Larmor frequency of 600 MHz for 1H; the RF field strength, ω1/(2π), has been determined to be 25 kHz. Suppose that the transmitter is placed at 5 ppm. Compute the offset (in Hz) of a peak at 10 ppm, and hence compute the tilt angle of the effective field, 9, for a spin with this offset.
Is this 25 kHz field sufficiently strong to give hard pulses over the full range of 1H chemical shifts?
Repeat the calculation for a Larmor frequency of 900 MHz and comment on your result.