aIn the cool breeze in Novenber,2009, a group pf students set off for the mysterious scene of forest in HeiLongjiang province.Unfortuntely, they got utterly lost in the thick forest. Some one among them took a piece of magnet, but failed to use it as a compass 正在翻译,请等待...[tra...
Amagnetic compassis a tool that fundamentally allows for the determination of a reference point or region on Earth corresponding to magnetic north. This is slightly different from true north, but with the varying correction factors required at different points around the globe now known, a good ma...
根据“As early as the Warring States Period. Chinese people discovered that a magnet could show the south and the north”可知早在战国时期。中国人发现磁铁可以显示南方和北方。故选C。(2)题详解: 细节理解题。根据“In the Song dynasty, people combined an artificially(人造地)magnetized compass with ...
This just would not happen without the help of the compass.( B )1. Which of the following is TRUE? A. The friction of South-pointing fish is bigger than that of Sinan. B. The compass is one of the Four Great Inventions of Ancient China. C. The compass was first used for ...
Why magnetic compass is always attracted to the north pole?Question:Why magnetic compass is always attracted to the north pole?Magnetic Field:The magnetic field exists around a magnet made by ferromagnetic materials such as iron, nickel, and cobalt. Bar magnets have a north magnetic pole at...
Which pole of a compass needle points to the south pole of a magnet? What is a superconductor? What are non-ferromagnetic materials? What are temporary and permanent magnets? What is a quantum wire? What is a positron? What is polarity in cladograms? What is reverse polarity? What is ...
a In the cool breeze in Novenber,2009, a group pf students set off for the mysterious scene of forest in HeiLongjiang province.Unfortuntely, they got utterly lost in the thick forest. Some one among them took a piece of magnet, but failed to use it as a compass. The knowledge they ...
A. Sieve B. Magnet C. Voltmeter D. Compass 相关知识点: 试题来源: 解析 A。B 选项“Magnet”(磁铁)用于分离含铁的物质;C 选项“Voltmeter”(电压表)用于测量电压;D 选项“Compass”(指南针)用于指示方向。“Sieve”(筛子)用于分离不同大小的固体混合物。反馈...
is a measure of thestrength of the magnetic field. Specifically, 1 Gauss is equivalent to 1 magnetic field line within 1 square centimeter.Also, the direction of the tangent to the field line is the direction of the magnetic field at that point and is the direction a compass would point....
aIn the cool breeze in Novenber,2009, a group pf students set off for the mysterious scene of forest in HeiLongjiang province.Unfortuntely, they got utterly lost in the thick forest. Some one among them took a piece of magnet, but failed to use it as a compass 正在翻译,请等待...[tra...