Which of the units is most appropriate for describing a 26- mile marathon run a-terameter b- gigameter c-kilometer d-nanometer

path length of the marathon is given as

as we know that

1 mile = 1609 m

so here the distance of marathon is

which is same as

so distance is of range of kilometer

So correct answer would be

c-kilometer

no. dot product   =0 when vecs at right angles

  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