Final answer:
It is false that gloves must always be worn when handling magnets or other equipment; safety practices vary depending on the situation. Magnets have specific properties, like repulsion and attraction, and experiments like the refrigerator magnet experiment can help demonstrate these. Safety precautions should be followed carefully in any experiment involving electricity or heat.
Step-by-step explanation:
The statement that gloves must always be worn when touching magnets, any equipment, door handles online, and heat cabinets is false. The use of gloves depends on the specific context and safety procedures of an experiment. In the case of handling magnets, there are specific situations where caution is warranted. For example, in the case of refrigerator magnets, which are typically safe to handle without gloves, you can conduct experiments to understand magnetic attraction and repulsion. By attempting to stick magnets to a door, you can observe that magnetic poles repel and unlike poles attract. Regarding safety, there are precautions to take, such as avoiding placing credit cards with magnetic strips near permanent magnets, which is true, as it may damage the magnetic strip.
When a magnet shatters, each piece will still have a north and a south pole, making the statement true. Dropping a bar magnet through a copper tube will indeed induce an electric current in the tube, confirming that the statement is true. Lastly, two insulating objects that are polarized do not necessarily have their polarization canceled just by touching them together, making this statement false.
It is also important to heed safety warnings during experiments. For example, the appropriate safety protocol for handling hot water in a beaker is to not touch the beaker with bare hands to prevent burns. Similarly, heavy-duty insulators are used to prevent electric shock and thermal hazards for live electrical wires, both in residential settings and in high-voltage power lines.