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solong [7]
3 years ago
6

Which equation is correct

Physics
1 answer:
Westkost [7]3 years ago
6 0
The answer i think is (B)
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When a magnet moves above a conducting ladder, the currents induced in the ladder produces a magnetic field. This field interact
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) pulls the ladder in the direction opposite

Explanation:

This is in line with lenz law that states that the magnetic field induced in a conductor act to oppose the magnetic field that produced it

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1. Synthesize Information You push your
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A 0.49 m copper rod with a mass of 0.15 kg carries a current of 13 A in the positive y direction. Let upward be the positive dir
Helen [10]

Answer:

Magnetic field, B = 0.23 T          

Explanation:

Given that,

Length of the copper rod, L = 0.49 m

Mass of the copper rod, m = 0.15 kg

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When the rod is placed in magnetic field, the magnetic force is balanced by its weight such that :

BIL=mg\\\\B=\dfrac{mg}{IL}\\\\B=\dfrac{0.15\times 9.8}{13\times 0.49}\\\\B=0.23\ T

So, the magnitude of the minimum magnetic field needed to levitate the rod is 0.23 T.

6 0
3 years ago
Which of the following iconic compounds forms an acid when dissolved in water
Anvisha [2.4K]

Answer: when an ionic compound dissolves in water, the positive ends of the water molecules are attracted to the anions and the negative ends are attracted to the cations.

Hydrogen Chloride (HCl) is a compound which forms an acidic solution when dissolved in water.

Hope it helps :)

Explanation:

6 0
4 years ago
The base unit of length in the international system of units is the:
zavuch27 [327]

The base unit of length in the international system of units is the: meter (m)

<h3>Meter</h3>

The meter, ( symbol: m ) is the SI unit of length. It is derived by taking the fixed numerical value of the speed of light in vacuum c to be 299 792 458 when expressed in the unit m s-1

<h3>International system of unit ( SI ) base units</h3>

The SI base units are the standard units of measurement defined which is defined by the International System of Units (SI) for the seven base quantities of what is now known as the International System of quantities:

Learn more about SI base units:

brainly.com/question/16393390

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3 years ago
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