A girl is trying to make a simple electromagnet to help her pick up a piece of metal she dropped under a car. Which list of materials would she need to make an electromagnet?(1 point)
Responses
plastic rod for a core, copper wire, 12-volt battery
plastic rod for a core, copper wire, 12-volt battery
glass rod for a core, copper wire, 12-volt battery
glass rod for a core, copper wire, 12-volt battery
metal rod for a core, copper wire, 12-volt battery
metal rod for a core, copper wire, 12-volt battery
wooden rod for a core, copper wire, 12-volt battery
wooden rod for a core, copper wire, 12-volt battery
The correct materials for making an electromagnet are: metal rod for a core, copper wire, and a 12-volt battery.
Which statement is true about the variables that affect the force of gravity between two objects?(1 point)
Responses
Force of gravity is affected by the masses of the objects and the distance between their centers.
Force of gravity is affected by the masses of the objects and the distance between their centers.
Force of gravity is affected by the masses of the objects and the distance between their outermost edges.
Force of gravity is affected by the masses of the objects and the distance between their outermost edges.
Force of gravity is affected by the diameters of the objects and their distance from the Sun.
Force of gravity is affected by the diameters of the objects and their distance from the Sun.
Force of gravity is affected by the volume of the objects and their velocity relative to the Sun.
The correct statement about the variables that affect the force of gravity between two objects is: Force of gravity is affected by the masses of the objects and the distance between their centers.
A teacher wants to find out how distance will impact the strength of the magnetic field. She uses a ruler to measure the distance between a magnet and several paper clips that are located at different distances. What does she observe?(1 point)
Responses
The distance does not impact the strength of the magnet.
The distance does not impact the strength of the magnet.
There is no attraction between the magnet and any paper clips.
There is no attraction between the magnet and any paper clips.
The closer the paper clips are to the magnet, the less they are attracted to it.
The closer the paper clips are to the magnet, the less they are attracted to it.
The closer the paper clips are to the magnet, the more they are attracted to it