Question

transistors are an essential part of many electronic devices. the length of a specific transistor is approximately 7 nanometers. this is equal to $7 \times 10^{-9}$ meters. what is $7 \times 10^{-9}$ written in standard form? type the number in the box.

Explanation:

Step1: Understand negative exponent rule

A negative exponent $10^{-n}$ means $\frac{1}{10^n}$, so $10^{-9} = \frac{1}{10^9}$.

Step2: Rewrite as decimal

$\frac{1}{10^9}$ is 0.000000001, so multiply by 7: $7 \times 0.000000001$

Step3: Calculate the product

Shift the decimal point in 7 nine places left.

Answer:

0.000000007