If you make an electromagnet using a battery circuit and a steel nail, how can you increase its magnetic strength? Use a longer nail.

Wrap more coils of wire around the nail.

Replace the nail with a copper rod.

Remove the plastic insulation from the wire coil.
I would like a little help with this please

2points why do scientists need governmental funding? o a. government politicians ask all the important scientific questions. o b. scientists have to pay taxes to the government on the money they make. o c. the cost of doing scientific research can be very high. o d. the government is controlled by scientists. submit

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.

Which symbol can be used to indicate the pressure at which a chemical reaction is carried out? 25°c 2 atm pa