<h3>
Most railroad tracks are built from pieces of steel supported by wooden ties, and laid with a gap between the ends. </h3>
Explanation:
The reasons are:
Firstly , the thermal expansion of solid at higher temperatures.
During the summer season, the steel tracks may expand due to thermal expansion and if gaps are not laid the tracks will bend and lead to accidents.
Secondly, imbibition of water during rainy season.
During the rainy season the wooden tracks will imbibe water and swell. If gaps are not provided, this may result irregular levels of railway track. This may prove very dangerous and lead to railway accident.
Answer:
is D ------------------------
The 3 States Of Matter udndusjd
Answer:
Option B, Move closer to your home town
Explanation:
The options for the given question are as follows -
A) Knock down your previous house and build a bigger one.
B) Move closer to your home town.
C) Move further away from your home town.
D) Stay where you are but speed up your daily life
Solution -
Electrons carry negative charge while nucleus carries positive charge due to the presence of positively charged proton ions and neutral ions (which has no charge). All the electrons are attracted towards the nucleus due to its positive charge. The orbit on which an electron revolves around a nucleus has higher energy level as compared to the energy levels located in between the space of electron and nucleus.
While moving from a high energy orbital to a low energy level orbital, an electron releases some energy. Hence, in order to move closer to home, electron needs to push itself toward the nucleus by releasing energy
Hence, the given option is B
