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The same as in a metal wire or any other piece of metal. The free conduction band electrons acting as an electron gas filling the volume of the metal object flow away from an applied negative potential and toward an applied positive potential.
Note that while electrical current flow moves in the metal at a speed approaching the speed of light, the actual speed of movement of the electron gas (and the individual electrons comprising it) is closer to 1 millimeter per hour, due to the fact the electrons are performing random walks as a result of collisions with atoms and other electrons.
What else can I help you with?
When you heat a metal bar does it get thicker?
No, heating a metal bar typically causes it to expand in length due to thermal expansion, but not in thickness. The increase in temperature causes the metal atoms to vibrate more, leading to an increase in spacing between the atoms and resulting in expansion along the length of the bar, not in thickness.
What test would you perform to discover whether a metal bar is a magnet or not?
You can perform a simple test by bringing a compass close to the metal bar. If the compass needle moves or aligns with the metal bar, then the bar is likely a magnet. Another test involves observing if the metal bar can attract small metal objects like paper clips.
What happens to the particles in a metal when the metal is heated?
When a metal bar is heated....the particles in the area of the metal bar that is hot start vibrating.. knocking into each other and passing the heat energy on to cooler particles. The cooler end that isn't heated still has a rise in temperature just not as much as the heated area because the heat has almost been diluted.
A hot metal bar is placed into cool water what statement is true?
The temperature of the metal bar decreases.The temperature of the cool water increases.The final temperature of the metal bar will be the same as the final temperature of the water.
Can heat conduct through metal?
By conduction. This means that atoms of the metal become more energetic when heated, and they transfer this energy from atom to atom, so it travels along the bar from the hot end to the cooler end
Why are the sides of the saucepan made out of steel?
So that the heat from the fire or hob that is underneath it can heat the object inside as metal is a conductor.
When you heat a metal bar does it get thicker?
No, heating a metal bar typically causes it to expand in length due to thermal expansion, but not in thickness. The increase in temperature causes the metal atoms to vibrate more, leading to an increase in spacing between the atoms and resulting in expansion along the length of the bar, not in thickness.
What is the transfer of heat from warm to cold areas called?
If you heat one end of a metal bar then the heat passes along the bar by a process known as conduction.
How does heat travel along a metal?
By conduction. This means that atoms of the metal become more energetic when heated, and they transfer this energy from atom to atom, so it travels along the bar from the hot end to the cooler end
How does heat travel through metal?
the answer is that it travels by conduction. thank you.
Jimmy held the end of a metal bar over a fire while holding on to the opposite end After a few minutes the end he was holding began to get very hot Which process is illustrated in this example?
This example illustrates the process of heat transfer through conduction, where heat is transferred from the fire through the metal bar to Jimmy's hand. The metal bar acts as a conductor of heat, allowing the energy to flow from the hot end to the cooler end.
Jimmy held the end of a metal bar over a fire while holding on to the opposite end. After a few minutes the end he was holding began to get very hot. Which process is illustrated in this example?
Conduction is the process illustrated in this example, where heat is transferred through direct contact between objects with different temperatures. In this case, the heat from the fire is being transferred along the metal bar, making the end that Jimmy is holding gradually hotter.
What is a definition of a fret on a guitqr?
the metal bar indicating each unit along the strings- can denote semi or complete tones, depending.
What does it mean if something is a conductor of heat?
It means that heat is transferred fairly fast through it. (A metal bar is a good conductor of heat, while wood is not). For example, you will not be able to touch a metal bar whose one end is in a blazing fire. While you can easily hold a torch of which one side is burning.
What is motional emf?
Induced Current and Motional EmfThe electric field in the metal bar causes a potential difference of V = El = vBl. If the bar slides along metal rails, as in the figure below, a closed circuit is set up with current flowing in the counterclockwise direction, up the bar and then around the metal rail back to the bottom of the bar. TInduced Current and Motional EmfThe electric field in the metal bar causes a potential difference of V = El = vBl. If the bar slides along metal rails, as in the figure below, a closed circuit is set up with current flowing in the counterclockwise direction, up the bar and then around the metal rail back to the bottom of the bar. This is called an induced current.The moving bar is a source of an electromotive force, called motional emf, since the emf is generated by the motion of the bar.The force is defined as:The magnitude of the induced emf can be increased by increasing the strength of the magnetic field, moving the bar faster, or using a longer bar.ExampleA bar of length 10 cm slides along metal rails at a speed of 5 m/s in a magnetic field of 0.1 T. What is the motional emf induced in the bar and rails?Now that we've defined motional emf, solving this problem is simply a matter of plugging numbers into the appropriate equation:his is called an induced current.
What test would you perform to discover whether a metal bar is a magnet or not?
You can perform a simple test by bringing a compass close to the metal bar. If the compass needle moves or aligns with the metal bar, then the bar is likely a magnet. Another test involves observing if the metal bar can attract small metal objects like paper clips.
Why heat can not be transferred in this way in an iron rod?
heat is transferred only from high energetic concentration to low energetic concentration. therefore heat cant be transferred in any usual way.
