A field is [blank_start]an area that exerts a force[blank_end] on [blank_start]an object[blank_end] without making [blank_start]physical[blank_end] contact with it. This is sometimes called "[blank_start]forces acting at a distance[blank_end]".
A force that causes plastic poles to repel or attract
A force that causes magnetic poles to repel or attract
A force that causes magnets to demagnetise
A force that causes magnetic polls to repel or attract
What is electrostatic force?
The force that powers Electro from Spiderman
A force that causes charged phones to repel
A force that causes charged objects to repel or attract
A force that causes charged objects to rapunzel
Forces can be measured in [blank_start]Kilowatts[blank_end]
Mass is the amount of [blank_start]matter[blank_end] in an object - it is usually measured in [blank_start]kilograms (kg)[blank_end] but can be measured in other units such as [blank_start]grams (g)[blank_end] or tonnes (t).
Which of these is needed to show a vector force? (You can select more than one btw)
The closeness of the lines indicating a stronger magnetic force
The closeness of the lines indicating a weaker magnetic force
In a magnet, there are areas called [blank_start]domains[blank_end], each of which behaves like a tiny [blank_start]magnet[blank_end]. In an unmagnetised ferromagnetic substance, the domains point in [blank_start]different[blank_end] directions and [blank_start]cancel[blank_end] one another out. In a magnetised ferromagnetic substance, the domains point in [blank_start]the same[blank_end] direction to create defined poles.
To magnetise these domains one can either:
Align them by stroking the substance with a permanent magnet
Use electricity to align them and create [blank_start]and elctromagnet[blank_end]
piece of cake
What will happen when a positively charged object goes near another positively charged object?