When the weight hangs above the floor from the copper wire?

This occurs due to a phenomenon known as thermal expansion . As the copper wire is heated, its atoms gain energy and vibrate more vigorously. These increased vibrations cause the atoms to take up more space, resulting in the expansion of the wire.

How many calories are taken from each gram of water that remains?

For vaporization of one gram of water, the chart shows that 540 calories are absorbed. When condensation occurs (GL), each gram of water vapor releases 540 calories as it changes back to liquid water.

What happens if you hold a piece of copper wire over the flame of a wooden match?

If you hold a piece of copper wire over the flame of a wooden match, heat will be conducted by the copper wire to your fingers, and you will be forced to drop the wire . You will, however, still be able to hold the match because wood is a poor conductor of heat.

Why can copper be stretched into wires?

despite being flexible it is also a very durable metal which means it is resistant against necking and breaks. Copper is also very ductile so it can easily be stretched into a wire.

Why does the temperature of boiling water remain the same as long as the heating and boiling continue?

Temperature and Boiling It requires energy to change from a liquid to a gas (see enthalpy of vaporization). In addition, gas molecules leaving the liquid remove thermal energy from the liquid . Therefore the temperature of the liquid remains constant during boiling.

Does lead or water have a higher heat capacity?

Water has a higher specific heat capacity than lead and both start at the same temperature.. That means that it the water will need to absorb more heat energy than the lead to increase by the same temperature.

What is the heat capacity of water?

Specific Heat of Water For liquid at room temperature and pressure, the value of specific heat capacity (Cp) is approximately 4.2 J/g°C . This implies that it takes 4.2 joules of energy to raise 1 gram of water by 1 degree Celsius. This value for Cp is actually quite large. This (1 cal/g.

What happens when copper wire is tied to a stone and thrown on a power line?

If the throw is successful and the wire connected to the stone, connects the power wire running from pole to pole . You have made a connection depending on the voltage of the pole wire somebody might die. If the stone connected wire touches two powerwires you may make a short circuit also.

When you stretch a copper wire so that it is thinner?

Final answer: Stretching a copper wire, thereby making it thinner, leads to an increase in resistance between the wire's ends because the wire's length increases and its cross-sectional area decreases.

When a wire is bent back and forth it becomes hot Why?

As bonds are shifted, rearranged, or broken, some of that energy goes to causing vibrational motions in the atoms themselves. That causes the heat. When a wire is bent back and forth, it becomes hot, because of the friction developed in it .

When copper can be made into very thin wires it is?

The ability of metals like copper to be drawn into thin wires is called ductility .

Concept Development Practice Page 21 1 Temperature And Heat Answers (2024)

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Suppose you apply a flame and warm 1 liter of water, raising its temperature 10°C. If you transfer the same heat energy to 2 liters, how.

Concept Development Practice Page 21 1 Temperature And Heat Answers (2024)

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