4. Your friend wants to perform a magic trick that requires a magnet to be strong enough to attract and move a toy car made of nickel across a tabletop when the magnet is placed underneath the table. (Note: Most toy cars are not made of metals, like nickel, that are attracted to magnets.) When your friend puts a permanent magnet under the table, it is not strong enough to move the car. What question should your friend ask in order to help solve this problem? aWhy do cars move?bDoes the car have a motor?cWhat kind of electricity is powering the car?dWill a larger magnet act with greater force on the car?

Determine which two of the following objects could not easily be turned into a magnet. A nickel coinA stainless steel spoonA piece of plasticAn aluminium drink canI'm not sure

Unlike an electromagnet, a permanent magnetA does not need electricity to work.B cannot lift heavy objects and release them.C can easily increase or decrease its magnetic field.D can shut down its magnetic field with the flip of a switch.

The force made by a magnet is special because it can make other magnets and some metal objects  _______ without ever touching them. A. explode B. disappear C. move D. melt

The force made by a magnet is special because it can make other magnets and some metal objects  _______ without ever touching them. A. explode B. melt C. disappear D. move

An electric motor contains an electromagnet surrounded by a magnet. What is the function of an electromagnet in a motor?A The electromagnet converts electrical energy to motion.B The electromagnet converts magnetic energy to electrical energy.C The electromagnet increases the strength of the magnet surrounding it.D The electromagnet provides the electrical energy required for the motor to run.