3. (honors) the heat will transfer from the hot object to the cold objects. think
about what that
what will the equilibrium temperature be when a 270g block of copper at 300°c
is placed in a 150-g aluminum calorimeter cup containing 820-g of water at
12.0°c (the cup and the water are at equilibrium before the metal is added). the
specific heat of copper is 0.093 cal/g°c and the specific heat of aluminum is 0.22
cal/g°c.

root word, prefixes, and suffixes

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2

the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.