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zloy xaker [14]
3 years ago
12

What is the working principle of an electric motor?

Physics
2 answers:
slava [35]3 years ago
5 0
The answer B homie trust
Leni [432]3 years ago
3 0
The answer is b have a nice day
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An electron with a speed of 1.7 × 107 m/s moves horizontally into a region where a constant vertical force of 4.9 × 10-16 N acts
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Answer:

 y = 77.74 10⁻⁵ m

Explanation:

For this exercise we can use Newton's second law

        F = m a

        a = F / m

        a = 4.9 10⁻¹⁶ / 9.1 10⁻³¹

        a = 0.538 10¹⁵ m / s

This is the vertical acceleration of the electron.

Now let's use kinematics to find the time it takes to move the

         x= 29 mm = 29 10⁻³ m

On the x axis

            v = x / t

            t = x / v

            t = 29 10⁻³ / 1.7 10⁷

            t = 17 10⁻¹⁰ s

Now we can look for vertical distance at this time.

            y = v_{oy} t + ½ a t²

            y = 0 + ½ 0.538 10¹⁵ (17 10⁻¹⁰)²

            y = 77.74 10⁻⁵ m

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3 years ago
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Which of the following is a potential result of preparing appropriately before starting an experiment in a lab?
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1.a. identifying what are the two major motions of earth as it travels through space
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