Why must soft iron be used with an electromagnet?Suppose that a (small) charged conductor is connected to the ground. Explain why the conductor becomes uncharged.Why are magnetic field lines closed curves?Why are metals good conductors of heat and electricity?Why is Earth's magnetic field weake...
When the injector is energized, an electromagnet moves a plunger that opens the valve, allowing the pressurized fuel to squirt out through a tiny nozzle. The nozzle is designed to atomize the fuel — to make as fine a mist as possible so that it can burn easily. The amount of fuel suppl...
Chemical energy in a batter is a form of potential energy because it is stored energy. Chemical energy is the energy contained in the chemical bonds...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our...
If we lowerthe bridge, the current flows to the sounder. At the other end, the current energizes an electromagnet and this attracts the armature. The armature clicks down against a screw and taps out a message. The telegraph debuted in 1844, just five years after OK. It transmitted short ...
In the 1920s the speaker was often a large full-range horn.1940sIn the 1940s these single horns evolved into one large DC-electromagnet woofer in a very large cabinet, with a large high-frequency horn tweeter on top. 1950sThe 1950s brought us 15" horn-loaded permanent-magnet woofers ...
Additionally, the armored chestplate powered the electromagnet (the famous arc reactor in the films) that prevented deadly shrapnel from reaching his heart; thus, both the suit and the electromagnet were designed with the sole purpose of keeping Stark alive. The Iron Man armor was never designed ...
A) What is an electromagnet? B) What causes the magnetic field of the earth? C) What causes the northern and southern lights? What is magnetic intensity? Is the magnetism in bar magnet permanent or temporary? What happens when earth's magnetic field flips? Lightning is an...