# What period corresponds to 1 MHz?

$T = \frac{1}{1 M H z} = \frac{1}{1 \cdot {10}^{3} H z} = \frac{1}{1 \cdot {10}^{3} \frac{1}{s}} = 1 \cdot {10}^{-} 3 s$
Hz is a frequency which is equivalent to $\frac{1}{T}$ where T is the period. Since the prefix mega is $1 \cdot {10}^{3}$, the we can rewrite $1 M H z$ as $1 \cdot {10}^{3} H z$. Since Hz can be written as $\frac{1}{s}$the period is $\frac{1}{1 \cdot {10}^{3} \frac{1}{s}}$ leaving us with an answer of $1 \cdot {10}^{-} 3 s$