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Tutor profile: Marco M.

Inactive
Marco M.
I am an Electronics Engineer with experience in teaching and research since my undergraduate stage (about 8 years)
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Questions

Subject: Spanish

TutorMe
Question:

Having in mind that "Por" and "Para" can each be translated as “for", please give a suggestion for new learners.

Inactive
Marco M.
Answer:

The "easy one" of them is “Para” because it has relatively fewer uses: destinations, recipients, deadlines, and goals. Then, if you can memorize their uses and model sentences, just by discard you will know when to use "Por".

Subject: Electrical Engineering

TutorMe
Question:

Is the bandwidth (BW) of a sinusoidal signal zero?

Inactive
Marco M.
Answer:

Working in the frequency domain, we can give two approaches to this question: 1. Yes, if it is an ideal signal, its Fourier transform is a pulse signal with zero bandwidth. 2. No, if it is a real signal it could have more than one frequency or noise component, so its BW would be different from zero.

Subject: Physics

TutorMe
Question:

If the speed of a body is zero, is its acceleration necessarily zero?

Inactive
Marco M.
Answer:

No. For example, the speed of a body thrown upward at its maximum height is zero, but its acceleration is equal to the acceleration of gravity.

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