Answer:
Switches in mains circuits should always be included in the live wire so that when the switch is open no electrical energy can reach an appliance. If the switch is included in the neutral wire, electrical energy can still enter an appliance, and could possibly cause an electric shock (Figure 7.10).
Explanation:
Particles stay the same unless there is a chemical change whether the matter is solid, liquid or gas. ... When substances change state there is no change in mass so if 100 g of ice is melted 100g of water are formed this will boil to form 100g of steam (this is called "conservation of mass").
1. Ideal Mechanical Advantage (IMA): 9
Explanation:
For a wheel and axle system like the steering wheel, the IMA is given by:
where
is the radius of the wheel
is the radius of the axle
For the steering wheel of the problem, we see that 
and 
, so the IMA is
2. Efficiency: 88.9%
Explanation:
The efficiency of a system is defined as the ratio between the AMA (actual mechanical advantage) and the IMA:
In this problem, AMA=8 and IMA=9, so the efficiency is
A confined aquifer is a permeable rock unit found deep underground. It is usually overlain by another relatively impermeable rock or clay. This rock or clay layer limits the movement of the underground water whether into or out of the aquifer.
Since water is a liquid, therefore, is is always seeking a way out to leak.
Based on this, when a confined aquifer intersects with a fracture or a well, the water inside the aquifer will tend to move laterally until it can find a spot to leak from.
Therefore, the answer is "<span>It will move laterally until it finds a way out"</span>
Answer:
Bcuz when solid is near heat it changes to liquid this is called physical change
