Electromagnets are devices that create a magnetic field through the application of electricity. Strong electromagnets are used to lift, move and drop heavy objects, such as vehicles. Electromagnets have advantages over permanent magnets. When the current is switched off, the electromagnet will lose its magnetism. The car will fall back to earth and we need that when we move cars in a junkyard. With a regular ( permanent ) magnet it would be much harder to do.
Answer: A. True
Step-by-step explanation:
hope you get idea of graphing the four lines
2x - 4 < y. graph it. y > 2x - 4. boom answer
Step-by-step explanation:
hoped this helped have a nice day
First find the slope using rise over run
0-1/5-0
-1/5
To get a perpendicular slope, find the negative reciprocal.
Reciprocal: -5/1
Negative of that: 5/1 or 5
The y intercept is 1 (0,1).
Plug the values into slope intercept
Final answer: y=5x+1
