1 - A student uses a magnet to place a picture on the refrigerator door. Which statement explains how the magnet is able to stick to the refrigerator without directly touching it?
Responses
The magnet’s magnetic field can act at a distance, and influence the metal of the door through the picture.
The magnet’s magnetic field can act at a distance, and influence the metal of the door through the picture.
The force of gravity between the refrigerator and the magnet is strong enough to cause the magnet to stick.
The force of gravity between the refrigerator and the magnet is strong enough to cause the magnet to stick.
Friction acts through the picture and allows the magnet to stick to the refrigerator.
Friction acts through the picture and allows the magnet to stick to the refrigerator.
The picture’s own magnetic field attracts both the magnet and the refrigerator.
2 - Natasha wants to create her own electromagnet that can pick up small pieces of metal like paper clips or iron fillings. Which list of materials would Natasha need to build her electromagnet?(1 point)
Responses
string, battery, iron nail
string, battery, iron nail
battery, iron nail, wire
battery, iron nail, wire
glass rod, wire, battery
glass rod, wire, battery
Rubberband, string, battery
Rubberband, string, battery
3 - Below is a picture of an electromagnet made by wrapping a wire around an iron nail and connecting it to a battery. The electromagnet can be turned off by disconnecting it from the battery. A teacher helps students perform 2 experiments to test the variables that affect the electromagnet’s magnetic strength.
Experiment 1
The students build an electromagnet using a 4.5 volt battery connected to an iron nail with coils wrapped around it. They change the number of coils around the nail and record how many paperclips the electromagnet can pick up each time. The results are shown in the table below.
Experiment 2
In the second experiment, the students keep the same number of coils around the nail and records how many paperclips the electromagnet can pick up using different batteries.
Which question can be answered based on the results of Experiment 2?
(1 point)
Responses
How does the voltage of an electromagnet change when the type of paper clips changes?
How does the voltage of an electromagnet change when the type of paper clips changes?
How is the strength of an electromagnet affected by the voltage of the battery?
How is the strength of an electromagnet affected by the voltage of the battery?
How is the voltage of an electromagnet affected by the number of coils wrapped around the nail?
How is the voltage of an electromagnet affected by the number of coils wrapped around the nail?
How is the strength of an electromagnet affected by the number of coils around the nail?
4 -
for evebody lookin for dis its
1-The magnet’s magnetic field can act at a distance, and influence the metal of the door through the picture.
2-battery, iron nail, wire
3-How is the strength of an electromagnet affected by the voltage of the battery?
4-Generator
5-More coils of wire increases the strength of the electromagnet
6-Magnetic fields can be observed between objects that are not touching
7-Get a larger magnet with a larger magnetic field
8-Which objects react to a magnetic force?
9-Add batteries to increase the voltage, and decrease the space between the coils of wire.
10-The bolt will lift more paper clips, because more coils of wire produces a stronger magnetic field.
Thank you for providing the correct answers. I apologize for any confusion in my previous response.
How can an electromagnet be turned off?(1 point)
Responses
By disconnecting it from the battery
By disconnecting it from the battery
By adding more coils around the nail
By adding more coils around the nail
By increasing the voltage of the battery
By increasing the voltage of the battery
By changing the type of paperclips used
By changing the type of paperclips used
@2trimm_markel
Thanks man i rlly needed this
😅
The correct statement explaining how the magnet is able to stick to the refrigerator without directly touching it is:
- The magnet's magnetic field can act at a distance and influence the metal of the door through the picture.
To understand this, it is important to know that magnets have a property called a magnetic field. This magnetic field is the region around a magnet where its force can be felt. When a magnet is brought close to a metal surface, such as the refrigerator door in this case, its magnetic field can interact with the metal. This interaction creates a force that pulls the magnet towards the metal, allowing it to stick without directly touching.
As for the second question, Natasha wants to create her own electromagnet that can pick up small pieces of metal like paper clips or iron fillings. The correct list of materials she would need to build her electromagnet is:
- battery, iron nail, wire
To build an electromagnet, Natasha would need a power source, which is the battery in this case. The iron nail acts as the core of the electromagnet, providing a path for the magnetic field to flow through. The wire is wrapped around the iron nail to create the coils that will carry the electric current from the battery. When the battery is connected to the wire, it creates a magnetic field around the coils, turning the iron nail into a magnet that can attract and pick up small pieces of metal.
Moving on to the third question, based on the information given about Experiment 2, the question that can be answered is:
- How is the strength of an electromagnet affected by the voltage of the battery?
In Experiment 2, the students kept the same number of coils around the nail and recorded how many paperclips the electromagnet could pick up using different batteries. By comparing the results, they can determine whether increasing or decreasing the voltage of the battery has any effect on the strength of the electromagnet. The strength of the electromagnet refers to its ability to attract and pick up the paperclips, and the voltage of the battery is one of the variables being tested to see how it affects the strength.