Q: The wheels and gears of a machine are greased in order to decrease
A: friction
Q: Which measurement represents the mass of an object?
A: 35 grams
Q: Which of these elements is found in the greatest amount in organisms?
A: carbon
Q: A calculation based on the chemical energy of gasoline shows that a car should be able to go 100 miles on a gallon of fuel. When the car was driven on a test track, the car only went 25 miles on a gallon of fuel. What accounts for most of the difference?
A:
the waste heat from the combustion of fuel in the engine