If you make an electromagnet using a battery circuit and a steel nail, how can you increase its magnetic strength? a. replace the nail with a copper rod b. wrap more coils of wire around the nail c. use a longer nail d. remove the plastic insulation from the wire coil

About 70 percent of the earth's surface is water-covered, and about 96.5 percent of all earth's water is salt water. identify the watery feature on earth that is made of freshwater rather than salt water. a) bay b) glacier c) ocean d) sea it is not incomplete this is the true question

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same