Metal improves conductivity since Metals usually have small amounts of valance electrons which allow smoother movement through them. Metalloids can either improve or weaken conductivity by adding or removing an electron. Non-metals have poor conductivity because their valance shell haves 4 or more valance electrons.
AKA It is B
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G/O/O/G/L/E
Answer:
Explanation:
We are given that
Length of wire,L=20 mm=
Current,I=4 A
Number of turns per unit length,n=800
Current,i=2 A
Magnetic field of solenoid,B=
Where
Magnetic force,F=
Using the formula
Answer:
3.44 metres
Explanation:
To determine the vector sum of the displacements Δd1 = 2.4 m [32° S of W]; Δd2 = 1.6 m [S]; and Δd3 = 4.9 m [27° S of E], resolve the given parameters into x - component and y - component.
Resolving into x - component
- 2.4cos32 + 4.9cos27 = 2.3306
Resolving into y - component
- 2.4sin32 - 4.9sin27 - 1.6 = - 2.553
The vector sum of the displacement will be
Sqrt( 2.3^2 + 2.6^2) =
Sqrt ( 11.81)
3.44 m
Therefore, the vector sum of the displacements is 3.44 metres
Answer:
1. surface water changes to vapor water
2. runs off into streams and rivers
3. transpiration
Explanation:
1. the water above the surface is being heated by the sun turning into a gas that makes up part of the cloud.
2. a runoff is the process of precipitation running down hills and into rivers and streams
3. Transpiration is essentially evaporation of water from plant leaves.
'C' is a simple explanation of astigmatism.