Question 1: Using the force of Earth's magnetic on a current to lift objects What is the minimum current you would need to pass through a 1 cm radius copper wire in order to have it float in Earth's magnetic field? From your answer, do you think this method is a promising way to lift heavy objects? (hints: Earth's magnetic field is = 5×10°T , and the density of copper is = 9 g · cm³)

Question 1: Using the force of Earth's magnetic on a current to lift objects What is the minimum current you would need to pass through a 1 cm radius copper wire in order to have it float in Earth's magnetic field? From your answer, do you think this method is a promising way to lift heavy objects? (hints: Earth's magnetic field is = 5×10°T , and the density of copper is = 9 g · cm³)

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter24: Magnetic Fields

Section: Chapter Questions

Problem 80A

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The theory of special relativity explains the connection between space and time to objects that move in a straight line at a constant speed. The objects move at the speed of light. When an object approaches light speed, its mass is endless and cannot move faster than light. The most crucial postulate of Einstein's special relativity is that the laws of nature do not change in each frame of reference.

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