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professor190 [17]

3 years ago

8

In an electric motor _energy is transformed into_energy?

1 answer:

irina1246 [14]3 years ago

3 0

Answer:

mechanical energy

Explanation:

In an electric motor the electrical energy is converted into mechanical energy. Almost every mechanical movement that we see around us is accomplished by an electric motor. Electric machines are a means of converting energy. Motors take electrical energy and produce mechanical energy.

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Quartz, SiO2, contains 46.7% silicon by mass. What mass of silicon is present in 348 g of quartz? You must show your work.

anastassius [24]

Answer:162.516 gm

Explanation:

Given

Quartz contains 46.7 % silicon by mass

i.e.Silicon is 46.7 % by mass

Total mass of Quartz m=348 gm

46.7% of 348 gm

$=\frac{46.7}{100}\times 348=162.516 gm$

8 0

3 years ago

N the reactants of the general form of the single replacement reaction, the 'B' represents a _________ cation.

IrinaVladis [17]

1. Metallic

2. A, B

3. Unreactive

these are all right.

7 0

3 years ago

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airplane in flight has a pressure difference between the lower and upper wing surface; this provides an upward force that balanc

Dvinal [7]

Answer:

4523.17365 Pa

Explanation:

m = Mass of plane = 77000 kg

F = Force = Weight = $mg$

g = Acceleration due to gravity = 9.81 m/s²

A = Total area of wings = 167 m²

The pressure difference would be

$\Delta P=\dfrac{F}{A}\\\Rightarrow \Delta P=\dfrac{77000\times 9.81}{167}\\\Rightarrow \Delta P=4523.17365\ Pa$

The pressure difference required to keep the plane aloft is 4523.17365 Pa

3 0

3 years ago

Does the moon make its own light?

Stels [109]

Answer:

no it gets it form the sun

Explanation:

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3 years ago

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A.it is moving to the right

Bas_tet [7]

Answer:

I think c buti don't think I'm correct

7 0

2 years ago