Indeed correct, and the reason is because it’s efficient, has no nuclear waste etc.
Answer:
A. The poles are opposite
Explanation:
Magnets are object that produce magnetic fields, which are regions of space that exert a forces on charged particles in motion or on other magnets.
Every magnet has 2 opposite poles, which are labelled by convention as North Pole and South Pole; the lines of the magnetic field of a magnet go out from the North Pole and go into the South Pole.
Magnetic poles always exist in pair: it means, every magnet always contains a North Pole and a South Pole. If a magnet is cut in a half, each half of the magnet will still have a North Pole and a South Pole.
Each pole exerts a force on another pole; in particular, we have:
- Like poles (north-north or south-south) repel each other
- Opposite poles (north-south) attract each other
In this problem, a magnet is attracted to a metal object: this means that the two poles must be of opposite polarity. Therefore, the correct option is
A. The poles are opposite
They all have a rocky surface
The pandas package in python is a versatile library which is capable of displaying data in a table format which allows data analysis to be easily performed. Reading data using the python package requires that the format of the file to be read and the file path is explicitly stated.
- The pandas module has the ability to read a whole of different file formats by using the appropriate read functions such as read_csv, read_excel and so on.
- The format of the file to be read may be ; .csv, .xlsx, .txt abd so on. The appropriate format of the file has to be stated with the file path of the file.
- The file path refers to the location in which the file is on the computer. This path has to be stated so that pandas knows where to locate the file.
Therefore, the pandas module requires that the format and file path ls stated when reading a file.
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