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3 years ago

A scientist is using a lithium ion battery to power her laptop.

Physics

2 answers:

Scrat [10]3 years ago

8 0

The statement about the battery which is correct is; a new substance is formed as the battery is used.

Lithium ion batteries have become part of most modern devices such as cell phone, laptop computers and other digital devices.

It shorter time of recharge and good battery life has continued to make it a top choice in the electronics industry.

The equation that describes the chemistry of lithium ion battery is;

LiC6 + CoO2 ⇄ C6 + LiCoO2

The reaction goes towards right hand side when the battery is in use and towards the left hand side when that battery is recharging.

Hence, from the equation, we can see that a new substance, LiCoO2 is formed when the battery is in use.

Learn more: brainly.com/question/22885959

Molodets [167]3 years ago

5 0

Answer:

The anwser is d

Explanation

I did the test

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All of the noble gases have _______ electrons in their outer shell

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Answer:

Explanation:

All noble gasses have 8 electrons in their outer shell

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3 years ago

What is the ﬁnal equilibrium temperature when 12 g of milk at 7◦C is added to 175 g of coﬀee at 69◦C? Assume the speciﬁc heats o

lina2011 [118]

Answer:

ﬁnal equilibrium temperature is 65.02 ◦C

Explanation:

Given data

milk = 12 g

temp milk = 7◦C

coffee = 175 g

coffee temp = 69◦C

to find out

ﬁnal equilibrium temperature

solution

we apply here equilibrium condition i.e m c ΔT

milk mass × c × ΔT = coffee mass × c × ΔT

12 × 1 × (T- 7) = 175 × 1 × ( 69- T)

12T - 84 = 12075 - 175 T

187 T = 12159

T = 65.02

so ﬁnal equilibrium temperature is 65.02 ◦C

3 0

4 years ago

2. Two charged particles as shown in figure below. QP = +10 μC and Qq = +20 μC are separated by a distance r = 10 cm. What is th

netineya [11]

Answer:

F = 180 N

Explanation:

Given that,

Charge, q₁ = 10 μC

Charge, q₂ = 20 μC

The distance between the charges, r = 10 cm = 0.1 m

We need to find the magnitude of the electrostatic force. The formula for the electrostatic force is given by :

$F=\dfrac{kq_1q_2}{r^2}\\\\F=\dfrac{9\times 10^9\times 10\times 10^{-6}\times 20\times 10^{-6}}{(0.1)^2}\\F=180\ N$

So, the magnitude of the electrostatic force is 180 N.

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3 years ago

The outer ear channels sound waves down the external __________ to the __________, a tight membrane that vibrates in response to

kakasveta [241]

Answer:

B. pinna . . . eardrum

Explanation:

Hearing is one unique feature of organisms performed by the EAR in humans and some other animals. The ear functions to transmit sound vibrations as impulses to the brain, which sends it back as sound. Specific part of the ear plays a pivotal role in bringing about the hearing process.

The external or visible part of the ear called PINNA channels or guide the sound waves coming from the external environment into the EARDRUM OR TYMPANIC MEMBRANE, which vibrates in response to the reception of the sound waves.

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3 years ago

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Answer:

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