Four materials have the same initial temperature and mass, if all the four materials absorbed 5000 Joules of heat which material has the hig

Question

Four materials have the same initial temperature and mass, if all the four materials absorbed 5000 Joules of heat which material has the highest temperature?
Glass

Copper

Lead

Gold

in progress 0
Khoii Minh 2 months 2021-07-24T01:25:23+00:00 1 Answers 3 views 0

Answers ( )

    0
    2021-07-24T01:26:58+00:00

    Answer:

    reaches a higher temperature is LEAD.

    Explanation:

    In this exercise we have a calorimeter problem, in which the initial energy is absorbed by each body

           E₀ = m c_e ΔT

    where E₀ = 5000 J

           ΔT = \frac{E_o}{m \ c_e}

    the specific heats for each material are tabulated

          material   c_e (J / kg ºC)

         glass           837

         copper       387

         lead            128

         gold            129

    As they indicate that the mass of the materials is the same, the one with the greatest temperature difference is the one with the least specific heat, consequently the one that reaches a higher temperature is LEAD.

    let’s calculate for a mass of 1 kg

    glass

           ΔT = 5000/(1 837)

           ΔT = 6ºC

    Lead

           ΔT = 5000/(1 128)

           ΔT = 39.1º

    GOLD

           ΔT = 5000/(1 129)

           ΔT = 38.8º C

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )