Three wires of the same diameter and length are made from three different metals: copper (rho = 1.7 × 10–8 Ω·m), aluminum (rho = 2.7 × 10–8 Ω·m), and silver (rho = 1.6 × 10–8 Ω·m). Which wire has the least resistanc

Silver has least resistance

Explanation:

The given data :-

i) Since the diameter of each wire is same so the area of each wire is same i.e A₁ = A₂ = A₃.

ii) Length of each wire is same i.e L₁ = L₂ = L₃.

iii) Resistivity of copper ( ρ₁ ) = Ω.m

iv ) Resitivity of aluminum (  ρ₂ ) =   Ω.m

v ) Resitivity of silver ( ρ₃ ) = Ω.m

Resistance is given by

Since the area and length are same of all three wire so it becomes constant.

R ∝  ρ

So by observing the resistivity of all three wire.

ρ₃ <  ρ₁ <  ρ₂

Therefore  the wire silver has least resistance since it has least value of resistivity.

the word that best describes martin luther king jr.'s tone in the video is dignified

martin luther king, jr. was a social activist and baptist minister who played a key role in the american civil rights movement from the mid-1950s until his assassination in 1968. the video shows his manner and attitude having or showing a composed or serious manner that is worthy of respect so dignified is the correct answer

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.