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1 year ago

5. a new type of hoverboard has been designed to levitate over a copper surface. the

1 answer:

7 0

The magnetic field is responsible for levitating the hoverboard and rider as it traverses the half pipe.

<h3>What is a magnetic field?</h3>

The magnetic field is defined as the field the magnetic materials generate or when an electric charge moves in a field region that generates the magnetic field.
The surface is made up of from the copper and copper is conductor of electricity.
When an electrical charge moves, it generates a magnetic field. As with electrical current running via a wire, the spinning and orbiting of an atom's nucleus produces a magnetic field.
Thus, the magnetic field is responsible for levitating the hoverboard and rider as it traverses the half pipe.

<h3>What is the characteristics of Magnetic fields?</h3>

Magnetic field lines never cross one another.
They begin (from the north pole) and end (to the south pole) perpendicular to the surface of the magnet. Magnetic field lines also run through the magnet.
The magnetic field is denser at the poles and less dense as we move away from them.
A single magnetic pole does not exist. Magnetic poles are always found in pairs of opposing poles.

Learn more about the magnetic field here:

<u>brainly.com/question/23096032</u>

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.2, A car starting from rest has an acceleration of

riadik2000 [5.3K]

Answer: 2.5 m/s and 6.25 m

Explanation:

u = 0

a = 0.5 m/s²

t = 5 s

v = u + at

= 0 + 0.5 × 5

= <u>2.5 m/s</u>

s = ut + 1/2 at²

= 1/2 × 2.5 × 5

=<u> 6.25 m</u>

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3 years ago

The_____ form acidic compounds with hydrogen.

dsp73

Chlorine forms hydrochloric acid when reacted with hydrogen

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2 years ago

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If you add two velocity vectors going in opposite directions, will the resultant vector be smaller or larger than the vectors yo

11111nata11111 [884]

smaller, because the part of the velocities cancel each other out

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2 years ago

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What centripetal force is needed to keep a 7kg mass moving in a circle of 4 meters radius at 15m/s

liq [111]

Answer:

We conclude that the centripetal force needed to keep a 7kg mass moving in a circle of 4 meters radius at 15m/s is 393.75 N.

Explanation:

Given

Mass m = 7 kg

Radius r = 4 m

Velocity v = 15m/s

To determine

We need to determine the centripetal force needed to keep a 7kg mass moving in a circle of 4 meters radius at 15m/s.

We know a centripetal force acts on a body to keep it moving along a curved path.

We can determine the centripetal force using the formula

$F_c=\frac{mv^2}{r}$

where

$m$ is the mass

$v$ is the velocity

$r$ is the radius

$F_c$ is the centripetal force

substitute m = 7, r = 4, and v = 15 in the formula

$F_c=\frac{mv^2}{r}$

$F_c=\frac{7\left(15\right)^2}{4}$

$F_c=\frac{1575}{4}$

$F_c=393.75$ N

Therefore, we conclude that the centripetal force needed to keep a 7kg mass moving in a circle of 4 meters radius at 15m/s is 393.75 N.

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3 years ago

Which statement descThe image shows the right-hand rule being used for a current-carrying wire.

Makovka662 [10]

Answer:

The second option.
When the current flows up the wire, the magnetic field flows out on the left side of the wire and in on the right side of the wire.

Explanation:

The first figure that I copy here with is the figure corresponding to this question.

The thumb is pointing upward.

The rule is that the thumb aims to the direction of the flow of current and the other fingers give the field lines.

The second figure that I attach is a free image from internet and it shows the direction of both the current and the fiedl lines.

So, the conclusion is that the current goes upward the wire and the field lines go out of the paper (screen) for the points to the left of the wire and in on the right side of the wire.

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3 years ago

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