Question 11 (1 point)
Cast-iron skillets take longer to heat up than copper ones, but they hold their heat
longer. Why?

- Copper and iron have the same specific heat.

-Iron has a higher specific heat than copper.

- Copper has a higher specific heat than iron

Iron has a higher specific heat than copper.

Option: B

Explanation:

The Specific heat of copper is 385 J whereas the specific heat of Iron is 450 J. So it obviously shows that Iron has more specific heat than Copper.

Iron takes more energy to heat than copper but it stores more energy when heated than copper. So it takes more time to heat the iron skillet than the copper vessel. But once heated, iron vessels store more energy when heated than copper ones. Also it depends on the molecular structure of the elements. Cast Iron has a structure of iron crystals and amorphous carbon atoms whereas Copper has a regular structure. Since cast iron has less organized structure more energy is required to vibrate the atoms.

i sometimes feel that way too. i feel that i should hurt someone because they hurt me, but i wouldnt do it. that would make things so much worse i have so much experience with this stuff

explanation:

d₁ = displacement of tern from arctic to antarctic = 11000 miles

d₂ = displacement of tern from antarctic to arctic =   - 11000 miles

d = total displacement for the journey

total displacement for the journey is given as

d = d₁ + d₂

d = 11000 + (-11000)

d = 0 miles

t₁ = time of travel from arctic to antarctic = 3 months = 3 x 30 days = 90 days

t₂ = time of travel from antarctic to arctic = 3 months = 3 x 30 days = 90 days

t = total time of travel

total time of travel is given as

t = t₁ + t₂

t = 90 + 90

t = 180 days

average velocity is given as

average velocity = total displacement/ total time

v = d/t

v = 0/180

v = 0 miles/day