Question

In the thermal energy emission experiment with metal containers, what is a recommended procedure?

a) Fill both containers with the same amount of hot water.

b) Use containers with different shapes for comparison.

c) Place containers in direct sunlight for accelerated results.

d) Compare the weight of the containers before and after the experiment.

Answer 1

The recommended procedure for the thermal energy emission experiment with metal containers involves measuring the dimensions of the containers, weighing them, filling them with ice, and inserting a thermometer. The containers are then placed in an incubator to melt the ice and raise the temperature of the water. The measured quantities are used to estimate the thermal conductivity of each container material.

Step-by-step explanation:

For the thermal energy emission experiment with metal containers, the recommended procedure is to:

1. Measure the dimensions of each container, including the side surface area and the thickness of the sides.
2. Weigh an empty container.
3. Fill the container with ice, weigh it again, and insert a thermometer into the container.
4. Place the container in an incubator at a temperature of 40°C.
5. As the ice melts and the temperature of the water rises, measure the time it takes for the ice to completely melt and the temperature difference between the incubator (T2) and the ice (T1).
6. Use the measured quantities in the equation for thermal conductivity to estimate the thermal conductivity (k) for each container material.

Important properties to measure include the dimensions of the containers, the mass of the ice, and the temperatures. Sources of error include the precision of the measuring instruments and the limited precision of the balance, thermometers, and timer.