Question

if the average speed of a helium atom is 1290. m/s, what is the speed in miles per hour? (I mi=1609m)

Answer 1

Ans :

1 mile = 1609 m

1 hour = 60 minutes , and 1 minute = 60 seconds

So the speed of helium atom in miles per hour will be :

cancelling out the common terms , we get :

$=\frac{1290*mi *60 *60}{1609*hr*1 *1}$

= 2886. mi/hr

So the speed will be 2886 miles per hour.