Question completion status: one nano second times one kilometer/second is o a. 10-3m ob. 10-6 m oc 10+6m o d. 10-9m o e 10-12 km

Explanation:

We are asked to multiply  1 nano sec with 1 km/sec.

The conversion used from nano second to second

1 nsec =

The conversion used from km to meters:

1 km = 1000 m

Putting the values we get:

Therefore, the given conversion is

the value of the 4 in the hundreds place is 400 while the value of th e 4 in the tens place is 40

400 is way bigger than 40.