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

Answer:

$760.288miles/hour$

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 =$\frac{339}{1000}=0.339km$

And 1 mile =1.6 km

So $0.339km=\frac{0.339}{1.609}=0.2106miles$

We know that 1 hour = 60×60=3600 sec

So 1 sec$=\frac{1}{3600}=2.777\times 10^{-4}hour$

Now speed $=\frac{distance}{time}=\frac{0.2106}{2.77\times 10^{-4}}=760.288miles/hour$

Answer 2

Answer:

The speed is 758.322 mil/hr.

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, $339\ m/s = 339\times2.23694$

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

Hence, The speed is 758.322 mil/hr.