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3 years ago

What are the disadvantages of driverless cars? Check all that apply

Physics

1 answer:

Sauron [17]3 years ago

4 0

Answer:

Explanation:

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You have a 1.8m long copper wire. You want to make an N-turn current loop that generates a 2.0mT magnetic field at the center wh

NikAS [45]

Answer:

The diameter is 0.022m.

Explanation:

The magnetic field $B$ at the center of the coil is given by

(1). $B = \dfrac{\mu_0 NI}{d}$

where $\mu_0 = 1.26*10^{-6} m\:kg\:s^{-2} A^{-2}$ is the magnetic constant, $I$ is the current, $N$ number of coils, and $d$ is the diameter of the coil.

Now, if we call $L$ the length of the wire, then it must be true that

$\pi dN = L$ (this says $N$ coil circumferences ( $c=\pi d$ ) fit into $L$ )

$\therefore N = \dfrac{L}{\pi d }$

putting this into equation (1) we get:

$B = \dfrac{\mu_0 IL }{\pi d^2}$

solve for $d:$

$\boxed{d = \sqrt{\dfrac{\mu_0I L }{\pi B} }}$

putting in the numerical values

$\mu_0 = 1.26*10^{-6} m\:kg\:s^{-2} A^{-2}$

$I =1.3A$

$L= 1.8m$

$B =2.0*10^{-3}T$

we get:

$d = \sqrt{\dfrac{(1.26*10^{-6})(1.3) *1.8 }{\pi (2.0*10^{-3})} }$

$\boxed{d = 0.022m}$

4 0

4 years ago

How many complete wave cycles are shown?

skelet666 [1.2K]

Answer:

2.0

Explanation:

8 0

3 years ago

What happens when Earth rotates on its axis and how long does it take

faust18 [17]

Answer:

You get Day and Night

It takes 24 hour

8 0

3 years ago

Read 2 more answers

element x has five valence neutrons, element y has one valence electron and element z has one valence electron. which two of the

nikitadnepr [17]

I assume the element has 5 valence electrons (not neutrons). The similar properties are shared between y and z since they have the same number of valence electrons. This is what is primarily responsible for chemical behavior.

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3 years ago

How long a star lives and what it becomes at the end of its life depends primarly on what

liraira [26]

I believe the answer would be mass. Low mass stars and medium mass stars often become white dwarfs when they die while high mass stars explode in violent explosions called supernovas and usually leave behind a black hole or a neutron star.

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3 years ago