Answer:
8.6 miles
Explanation:
We need to calculate the components of the total displacement along the east-west and north-south directions first.
In the first part, Erica moves 5.2 miles at 25∘ north of east. So the components of this displacement along the two directions are:
East: 
North: 
In the second part, Erica moves 5.0 miles north. So, the components of this displacement are:
East: 
North: 
So the components of the total displacement are
East: 
North: 
Therefore the magnitude of the displacement, which is the straight-line distance from the starting point to the end of the race, is

2 water molecules contain 4 hydrogen atoms and 2 oxygen atoms. a mile of water molecules contains 2 moles of hydrogen atoms and 1 mole of oxygen atoms !
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In the 1930s James Chadwick added the neutrons to the atomic model.
Answer:
The three quantized particles are:
1. Electrons
2. Protons
3. Neutrons
Explanation:
Quantization can be defined as the conversion of a continuous quantity into discrete set of values.
It can also be defined as the concept which says that the particles exist as the smallest finite and discrete value known as quanta which not be divided further.
The three particles include:
1. The electron bound inside an atom have quantized momentum and energy.
2. The proton bound in the inside of a nucleus has energy in the quantized form only.
3. Also the nucleus bound neutron is also a quantized particle.
Answer: In algebra, the reflexive property of equality states that a number is always equal to itself.
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