False. The closest galaxy known to us is the Canis Major Dwarf Galaxy which is 236,000,000,000,000,000 km (25,000 light years) from the Sun.
Answer:
The strength of an electromagnet can be increased by increasing the number of loops of wire around the iron core and by increasing the current or voltage. You can make a temporary magnet by stroking a piece of iron or steel (such as a needle) along a permanent magnet.
There are three things that dictate how strong this field is:
1.How much kinetic energy you provide the wire
Answer is changed by pushing more current through the wire.
2. How permeable our magnetic rod is
Answer is changed by picking a more magnetic media
3.How many little magnetic fields you generate to make the net, large magnetic field
Answer is changed by increasing the amount of turns of the wire. More turns, more little fields, strong big field
<h2>Answer</h2>
25 miles/hour
<h2>Explanation</h2>
Given that,
<em>A pilot can travel with wind = 416miles </em>
<em>A pilot can travel against wind = 336miles</em>
<em>A pilot can speed without wind = 235miles/hour </em>
<em />
<em />
let wind speed = v miles/hr
pilot's speed with the wind = 235<em>+ v</em>
pilot's speed against the wind = 235 - v
<h2>
Time = distance / speed</h2>
416 / (235 + v) = 336 / (235 - v)
416(235 - v) = 336(235+v)
97760 - 416v = 78960 + 336v
97760 - 78960 = 416v + 336v
18800 = 752v
v = 18800/752
v = 25 miles/hour
wind speed = 25 mph
I think the correct answer from the choices listed above is option C. The formula that would represent the speed of the Toyota would be <span>T+10 mph= 60 mph. Hope this answers the question. Have a nice day. Feel free to ask more questions.</span>