How does the structure of atoms in a substance determine the substance’s conductivity?(1 point)
Responses
If an atom’s outer shell of electrons is loosely bound to the nucleus, the substance is a good conductor.
If an atom’s outer shell of electrons is loosely bound to the nucleus, the substance is a good conductor.
If an atom’s nucleus is positively charged, the substance is a good conductor.
If an atom’s nucleus is positively charged, the substance is a good conductor.
If an atom’s outer shell of electrons is tightly bound to the nucleus, the substance is a good conductor.
If an atom’s outer shell of electrons is tightly bound to the nucleus, the substance is a good conductor.
If an atom’s outer shell of electrons is positively charged, the substance is a good conductor.
Based on the data provided, the number of tacks picked up seems to increase as the number of coils in the electromagnet increases. Therefore, the best prediction for the number of tacks the electromagnet with 48 coils will pick up is more than 13 tacks. However, since there is no specific pattern given, it is difficult to make an accurate prediction without additional information.
The best prediction for the number of tacks the electromagnet with 48 coils will pick up based on the data provided is 20 tacks, as this would continue the trend of increasing tacks picked up as the number of coils increases. Therefore, the correct option is: "20 tacks".
The correct response is: "The pitch gets higher because of an increase in frequency." As an object moves toward you, the sound waves it produces are compressed (or "squeezed") in the direction of its motion, causing the wavelength to become shorter and the frequency to become higher. This increase in frequency leads to a higher pitch of the sound. This effect is known as the Doppler Effect and is also observed in other types of waves, such as light waves.
None of the responses are accurate. The structure of atoms in a substance determines its conductivity based on the number of valence electrons (electrons in the outermost energy level) and the ability of those electrons to move freely through the substance. Materials with electrons that are loosely bound and able to move easily, such as metals, are good conductors. Materials with electrons that are tightly bound and unable to move freely, such as nonmetals, are poor conductors (or insulators).
them are my only choioces are you sure that nonone of them could be it ?
I apologize for my previous response. Based on the options given, the closest response would be: "If an atom’s outer shell of electrons is loosely bound to the nucleus, the substance is a good conductor." This is because materials that have a high conductivity typically have electrons in their outermost energy level that are free to move and carry an electric charge. These loosely bound electrons are able to flow easily throughout the substance, allowing it to conduct electricity.
Students build four electromagnets and test them by picking up metal tacks. Here are their partial results.
12 coils 4 tacks
24 coils 9 tacks
36 coils 13 tacks
48 coils ? tacks
Which is the best prediction for the number of nails the electromagnet with 48 coils will pick up?(1 point)
here is my options for the question
16 tacks
16 tacks
12 tacks
12 tacks
13 tacks
13 tacks
20 tacks
How do electromagnets cause a maglev train to levitate above the track? (1 point)
Responses
Magnets in the track and magnets in the bottom of the train repel each other.
Magnets in the track and magnets in the bottom of the train repel each other.
Magnets in the track and magnets in the bottom of the train attract each other.
Magnets in the track and magnets in the bottom of the train attract each other.
Magnets in the sides of the tracks constantly repel and attract magnets in the sides of the train.
Magnets in the sides of the tracks constantly repel and attract magnets in the sides of the train.
Batteries provide electric energy to the electromagnets in the train.