which of these actions would decrease heat transfer between two objects?\no increasing the temperature of…

which of these actions would decrease heat transfer between two objects?\no increasing the temperature of the warmer object\no increasing the area of their contact\no reducing the thermal energy of the cooler object\no reducing the time of their contact

which of these actions would decrease heat transfer between two objects?\no increasing the temperature of the warmer object\no increasing the area of their contact\no reducing the thermal energy of the cooler object\no reducing the time of their contact

Answer

Explanation:

Step1: Recall heat - transfer factors

Heat transfer (Q) is related to temperature difference (\Delta T), contact area (A), and time (t). The general heat - transfer formula (for conduction) is (Q=\frac{kA\Delta Tt}{d}) (where (k) is thermal conductivity and (d) is the thickness of the material between the objects).

Step2: Analyze each option

  • Increasing the temperature of the warmer object increases (\Delta T), which increases (Q).
  • Increasing the area of their contact (A) increases (Q) according to the formula.
  • Reducing the thermal energy of the cooler object is equivalent to reducing its temperature, which increases (\Delta T) and thus (Q).
  • Reducing the time of their contact (t) decreases (Q) as (Q) is directly proportional to (t).

Answer:

reducing the time of their contact