Answer:
1.The main advantage of an electromagnet over a permanent magnet is that the magnetic field can be quickly changed by controlling the amount of electric current in the winding. However, unlike a permanent magnet that needs no power, an electromagnet requires a continuous supply of current to maintain the magnetic field.
It is associated with warm air moving over cold air and are more likely to produce large regions of light to moderate rain, drizzle or snow. It is also a transition zone where a warm air mass is replacing a cold air mass.
The gas will remain a gas and the energy will be transformed into heat raising the temperature
(Some very rare exceptions might occur)
<span>The importance of discovering gravitational
waves are; one, we can measure the activity between two bodies in orbit in the
universe, two, scientist can estimate the merging of two bodies in the universe
every 15 minutes by using LIGO and three, we can know the behavior of other
bodies that we did not know exist.</span>
