The energy expenditure value of traveling by car is 3.6 MJ/passenger-kilometer. For one person making a trip of 1000 km, if a gallon of gasoline contains 120 MJ, approximately how many gallons of gasoline would be required

30[gal] would be requiered.

Explanation:

The consumption ratio is given by the following expression:

To find the amount of energy needed we must multiply the ratio by the number of passengers, in this way the unit passenger-kilometer is removed from the denominator.

1 gal = 120 [MJ]

  x    = 3600[MJ]

x = 30 [gal]

area of focus

  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is