1. Which disaster are most likely to extinguish the human race? – Volcanoes and extraterrestrial impacts 2. What’s the smallest asteroid or comet that could cause devastating effects for humanity? – 1 kilometer wide – the equivalent of about a 10-minute…

Units of Measurement

?• 1 horsepower is 745.7 watts ?• 1 horsepower = work equal to lifting 550 lbs of weight to one foot for one second ?• 1 calorie is equal to 4.2 Joules ?• 1 barrel is equal to 159 liters…