Answer:
The answer to this question is given below in the explanation section.
Explanation:
Give the relation of resistance of wire with the length and thickness:
Resistance:
There is a resistance to the flow of an electric current through most conductors.
The length of wire increases
The thickness of wire decreases
The resistance of a long wire is greater then the resistance of a short wire because electrons collide with more ions as they pass through.
The relationship between resistance and wire length is proportional. The resistance of thin wire is greater then the resistance of a thick wire because a thin wire has fewer electrons to carry the current.The relationship between resistance and the area of the cross section of wire is inversely proportional.
Vi=0
T=3.07s
D=46m
A=?
A=2(d)/t ^2
2(46)/3.07^2=9.8m/s^2
Models change to accommodate new discoveries.
Answer:
1.97 * 10^8 m/s
Explanation:
Parameters given:
Refractive index, n = 1.523
Refractive index is the ratio of the speed of light in a vacuum to the speed of light in a specified medium.
When the medium is glass, the refractive index is given as:
n = Vv/Vg
Where Vv = velocity of light in a vacuum
Vg = velocity of light in glass
The velocity of light in a vacuum is 3 * 10^8 m/s. Therefore,
1.523 = (3 * 10^8)/Vg
Vg = (3 * 10^8)/1.523
Vg = 1.97 * 10^8 m/s