Anichrome wire and an aluminum wire, each with the same initial resistance, have the same change in resistance when heated separately. (ρal = 2.82 × 10^−8 ω ⋅ m; αal = 3.9 × 10^−3/°c; ρnichrome = 1.50 × 10^−6 ω ⋅ m; αnichrome = 0.40 × 10^−3/°c.) the ratio of the temperature change of the nichrome wire to the temperature change of the aluminum wire

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.