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Ne4ueva [31]
2 years ago
6

Which energy transformation occurs when an electrolytic cell is in operation.

Physics
1 answer:
hodyreva [135]2 years ago
7 0

Answer:

An electrolytic cell converts electrical energy into chemical energy.

Explanation:

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WHAT IS THE S.I UNIT OF MASS
ycow [4]

The SI unit of mass is kilogram (kg)....

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What’s the answer because I have no clue
Snezhnost [94]

Answer:

C. The number of protons.

Explanation:

All atoms of mercury will remain the same while different isotopes may have different number of neutrons.

For example, mercury has 80 protons, correlating with its atomic number. However, the number of protons, neutrons, and electrons could vary between each atom. If there are 80 protons, then there has to be 80 electrons. This means that the protons have to be the same in order to apply to all atoms of mercury

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4 years ago
Express the measurement 0.00000575 into scientific notation.
g100num [7]

Answer: = 5.75 × 10 -6

Explanation:

= 5.75 × 10-6

(scientific notation)

= 5.75e-6

(scientific e notation)

= 5.75 × 10-6

(engineering notation)

(millionth; prefix micro- (u))

= 0.00000575

(real number)

7 0
3 years ago
Charges that are different each other​
adell [148]

Answer:

Like charges repel each other; unlike charges attract. Thus, two negative charges repel one another, while a positive charge attracts a negative charge. The attraction or repulsion acts along the line between the two charges. The size of the force varies inversely as the square of the distance between the two charges.

4 0
3 years ago
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A child on a sled is perched at the top of a hill, at a height 7.0 m above the base of the hill. The total mass of the girl plus
spin [16.1K]

Answer:

a)11,71 m/s

b)12.73 m/s

Explanation:

We apply the conservation principle because there is no friction between the hill and the sled:

Total initial energy (Ei) = Total initial energy (Ef), Equation(1)

We define:

K = Kinetic energy = \frac{1}{2}*m*v^{2}

U = Potential energy = m*g*h

m = mass (kg)

v = velocity (m/s)

h = height (m)

g = gravity acceleration = 9.8m/s^{2}

A)  hi=7m, hf=0 ,vi=0 , vf=?

   Ei=Ef\\Ki+Ui=Kf+Uf

1/2*m*vi^{2} +m*g*hi= 1/2*m*vf^{2} +m*g*hf

0+m*g*hi=1/2*m*vf^{2}+0

(2*m*g*hi)/m=vf^{2}

vf=\sqrt{2*g*hi}

vf=\sqrt{2*9.8*7}

vf=11.71 m/s

Answer: She reaches the base of the hill with speed of 11.22 m/s

B) hi=7 m, vi=5 m/s, hf=0, vf=?

m*g*hi+1/2*m*vi^{2} =m*g*hf+1/2*m*vf^{2}

We divide all terms by m

g*hi+1/2vi^{2} =g*hf+1/2*vf^{2}

9.8*7+1/2*5^{2} =1/2*vf^{2}

2(68.6+12.5)=vf^{2}

162.2=vf^{2}

vf=\sqrt{162.2}

vf=12.73 m/s

Answer: She will move with a speed of 12.73 m/s when she reaches the base of the hill

3 0
3 years ago
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