3 years ago

What is the function of an electrical motor in terms of electric power and motion?

Physics

1 answer:

Pavlova-9 [17]3 years ago

6 0

It converts energy into kinetic energy.

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Explanation:

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3 years ago

A man in a lift is moving upwards in a constant speed.the weight of the man is W.Acc

Nookie1986 [14]

Answer:

Normal force=mg

Explanation:

The reaction force of weight is the normal force.

in order to find the normal for we need to write all the forces and set it equal to the net force:

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N=mg

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3 years ago

Train car A is at rest when it is hit by train car B. The two cars, which have the same mass, stick together and move off after

Natali [406]

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3 years ago

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The "Garbage Project" at the University of Arizona reports that the amount of paper discarded by households per week is normally

Lorico [155]

Answer:

54%

Explanation:

We are given that

S.D=4.2 lb

Mean= $\mu=9.4 lb$

We have to find the percentage of household throw out at least 9 lb of paper a week.

Normal distribution formula :

$P(X\geq a)=P(z\geq \frac{a-\mu}{\sigma})$

We have a=9

$P(X\geq 9)=P(z\geq \frac{9-9.4}{4.2})=P(z\geq -0.1)$

$P(X\geq 9)=1-P(z$

$P(X\geq 9)=1-0.4602=0.5398\times 100=54$ %

Hence, the percentage of household throw out at least of paper a week=54%

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3 years ago

Con que nombre se conocieron los primeros gimnasio que se crearon

notsponge [240]

Answer:

Los primeros gimnasios registrados datan de hace más de 3000 años en la antigua Persia, donde se los conocía como zurkhaneh, áreas que fomentaban la aptitud física.

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3 years ago