Answer:
A) A warm wire
Explanation:
A warm wire has the most resistance. Heating the metal wire causes atoms to vibrate more, which in turn makes it more difficult for the electrons to flow, increasing resistance. Heating the wire increases resistivity.
Answer:
I would say the net force acting on the car is in the opposite direction of the car's motion is correct
Answer:
4.81x10³ Ω*m
Explanation:
The resistivity (ρ) of the skin can be calculated using the following equation:
<u>Where:</u>
<em>R: is the electrical resistance of the skin = 500x10³ Ω</em>
<em>A: is the cross-sectional area of the skin</em>
<em>l: is the length of the skin= 1.6 m</em>
Since we can model the body between the hands as a cylinder, the cross-sectional area is:
Now, we can fin the resistivity (ρ) of the skin:
Therefore, the resistivity of the skin is 4.81x10³ Ω*m
I hope it helps you!
Answer:
The simple harmonic wave function is
Explanation:
Generally a sine wave is mathematically represented as
Here A is the amplitude which is mathematically represented as
substituting 0.25 m for Z we have that
k is the wave number which is mathematically represented as
substituting 1.1 m for (wavelength ) we have
=>
w is the angular frequency which is mathematically represented as
Here T is the period which is mathematically represented as
substituting 13 wave pass for n and for t
So
So