Question

An oxygen molecule at 25◦C has a speed of about 339 meters per second. Express this speed in miles/hour. (1 mi = 5280 ft)

Answer 1

The speed is 758.322 mil/hr.

Step-by-step explanation:

Given that,

Temperature = 25°C

Speed = 339 m/s

We need to convert the speed m/s to miles /hr

We know that,

Meter/ sec and miles/hr both are the unit of speed.

1 mil = 5280 ft

1 m/s = 2.23694 mil/hr

So,
`339\ m/s = 339*2.23694`

`339 m/s =758.322\ mil/hr`

Hence, The speed is 758.322 mil/hr.

Answer 2

`760.288miles/hour`

Step-by-step explanation:

We have given speed 339 meter/sec

We have to find the speed in miles/hour

We know that 1 km =1000 meter

So 339 m =
`(339)/(1000)=0.339km`

And 1 mile =1.6 km

So
`0.339km=(0.339)/(1.609)=0.2106miles`

We know that 1 hour = 60×60=3600 sec

So 1 sec
`=(1)/(3600)=2.777* 10^(-4)hour`

Now speed
`=(distance)/(time)=(0.2106)/(2.77* 10^(-4))=760.288miles/hour`