An ice cube is dropped into a glass of milk at 20 degrees celsius. which statement explains the transfer of kinetic energy (ke)?
a. because milk has higher ke than ice, ke is transferred from the milk to the molecules of ice.
b. because milk has higher ke than ice, ke is transferred from the molecules of the ice to the milk.
c. because ice has higher ke than milk, ke is transferred from the milk to the molecules of ice.
d. because ice has higher ke than milk, ke is transferred from the molecules of ice to the milk.

The correct answer is option (A).

Explanation:

Kinetic energy of particles increases when the temperature is increased.

Here, temperature of ice is zero degree Celsius where as milk in the glass has a temperature of 20 degree Celsius which means that kinetic energy of the milk particles will be higher than that of the ice molecules. Hence, flow of kinetic energy from milk to ice molecule will occur.

When we drop ice cube into a glass of milk at 20 degrees because milk has higher kinetic energy than ice, kinetic energy is transferred from the milk to the molecules of ice

The correct answer is Option A.

Explanation:

Average kinetic energy is defined as the average of all the kinetic energies of the particles present in a system. It is a measure of temperature of the system.

Mathematically,

As, kinetic energy is directly proportional to the temperature of the system. So, if the temperature increases, the kinetic energy also increases and vice-versa.

As we know, the temperature of ice is 0°C and it is given that the temperature of milk is 20°C. Thus, the kinetic energy of the milk is more than the kinetic energy of the ice.

So, to maintain equilibrium, heat will be transferred from a hotter body (present at higher temperature) to the colder body (present at lower temperature).

Hence, the correct answer is Option A.

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