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coldgirl [10]
3 years ago
9

Which reverses the flow of current through an electric motor?

Chemistry
2 answers:
Zinaida [17]3 years ago
8 0

Answer:

D. Commutator

Explanation:

I just took the quiz. credit to the person above me.

kirill [66]3 years ago
4 0

Answer:

D

Commutator is the answer

Explanation:

The commutator systematically converts the current direction between the rotor and the outer circuit. As the shaft revolves, the commutator converts the course of current in a winding. For a separate armature winding, when a cylinder has reached one-half perfect turn, the winding is now attached so that current passes through it in the reverse of the original direction.

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Perform the given operation and report the answer with the appropriate number of significant figures. 4.910 km - 0.08 km = ?
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Answer:

4.83 km

Explanation:

Let's consider the following subtraction.

4.910 km - 0.08 km

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Bingel [31]

Answer:

Reactivity

Explanation:

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How many mL of water would be displaced by 408 g of lead?
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Answer:

36 mL of water can be displace by the 408 g lead

Explanation:

Given data:

Mass of lead = 408 g

Volume of water displaced by lead = ?

Solution:

The volume of water displace by the lead would be equal to the given volume of lead.

So we will calculate the volume from given mass of lead from density formula.

Density:

Density is equal to the mass of substance divided by its volume.

Units:

SI unit of density is Kg/m3.

Other units are given below,

g/cm3, g/mL , kg/L

Formula:

D=m/v

D= density

m=mass

V=volume

Density of lead is 11.36 g/cm³.

d = m/v

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v = 408 g/ 11.36 g/cm³

v =36 cm³

1 cm³  = 1 mL

volume = 36 mL

36 mL of water can be displace by the 408 g lead.

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Gottfried wilhelm von leibniz invented digital mechanical calculator called​
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