How does an electromagnet work?
What will be an ideal response?
When a coil of copper wire has current running through it, it generates a
magnetic field. If we coil this wire around or inside a metallic frame and pass
current through the wire, we create an electromagnet that attracts ferrous metals,
or metals that contain iron. Once the electricity stops flowing, the magnetic force
dissipates and the gripper releases the ferrous metals it attracted.
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Which of the following is addressed by ISO 14001?
A) Establishing an environmental policy B) Planning environmental objectives and measurable targets C) Environmental goals and objectives must be established that are consistent with the environmental policy D) ISO 15000
Ultrasonic welding is a form of friction welding.
Answer the following statement true (T) or false (F)
What is the advantage of mixed plantings of vegetables, instead of solid beds of the
same vegetable?
What will be an ideal response?In 1956, when Hungary revolted against continued domination by the Soviet Union, the United States under Dwight Eisenhower
A. sent money to the rebels. B. quickly recognized the new Hungarian government. C. refused to admit any Hungarian refugees and declined to provide military assistance to the anticommunist Hungarian rebels. D. gave only outdated military equipment to the Hungarian freedom fighters. E. did nothing to help to defeat the communists.