'It was James Watt who determined an average one of these could pull 33,000 foot-pounds of coal'
Horse (horsepower)
PHYSICS: It was James Watt who determined an average one of these could pull 33,000 foot-pounds of coal
It was James Watt who determined an average one of these could pull 33,000 foot-pounds of coal
It was James Watt who determined an average one of these could pull 33,000 foot-pounds of coal
PHYSICS
Horse horsepower
PHYSICS