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wolverine [178]
3 years ago
5

Need help now!! Engineers at a technology company are designing a new battery for the next generation of cell phones. How will k

nowing the about the molecular structure of different metals help them choose the best materials?
Physics
1 answer:
Olin [163]3 years ago
3 0

Answer:

A battery consists of some number of voltaic cells made up of two half-cells that are connected in series by a conductive electrolyte containing metal cations (positive ions). It contains one half-cell with an electrolyte and the negative electrode, the electrode to which anions (negatively charged ions) migrate, and the other half-cell includes electrolyte and the positive electrode, to which cations (positively charged ions) migrate. Cations gain electron at the cathode, while anions are loose electrons at the anode.

The voltage developed across a cell's terminals depends on the energy release of the chemical reactions of its electrodes and electrolyte, so a strong metal at the anode will guarantee a higher energy release.

Also, since the reaction is redox, knowing about the nature of metals, especially their order in the electrochemical series will determine the ease of reaction when used for a battery.

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A bird flaps its wings 8 times per second. what is the frequency of the birds wing flapping?
Anika [276]

Answer:

480 flaps per minute

Explanation:

8*60 =480

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If a runner exerts 350 J of work to make 125 W of power, then how long did it take the runner to do the work?
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225 is the correct answer
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Why is honesty especially important in a scientist when the results of an experiment go against predictions❓❔
kramer
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3 years ago
A mass of 5kg starts from rest and pulls down vertically on a string wound around a disk-shaped, massive pulley. The mass of the
bekas [8.4K]

Answer:

1.98 m/s

Explanation:

To solve this, we would be using the law of conservation of energy, i.e total initial energy is equal to total final energy.

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Recall, v = wr, thus, w = v/r

Also, I = ½mr²

I = 0.5 * 5 * 2²

I = 10 kgm²

Remember,

mgh = ½Iw² + ½mv²

Substituting w for v/r, we have

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14.7 = 3.75 v²

v² = 14.7/3.75

v² = 3.92

v = √3.92

v = 1.98 m/s

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