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# Tutor profile: Lance S.

Inactive
Lance S.
TX Composite Science Teaching Certificate. 7 years of high school teaching experience.
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## Questions

### Subject:Basic Math

TutorMe
Question:

Write fifty two thousandths in decimal form.

Inactive
Lance S.

0.052

### Subject:Basic Chemistry

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Question:

An element has an atomic number of 9 and an atomic mass of 18.998. How many protons does this element have? How many electrons does this element have? (Assume the element is neutral) How many neutrons does this element have? What is the element?

Inactive
Lance S.

9 protons 9 electrons 10 neutrons (Round atomic mass up to 19, then subtract number of protons) The element is Fluorine.

### Subject:Physics

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Question:

A crate is pushed with 50 Newtons of force with an acceleration of 2 m/s^2. What is the mass of the crate?

Inactive
Lance S.

25 kg. According to Newton's Second Law, the acceleration of an object depends on the net force acting on the object and the mass of the object. Put in mathematical terms, F=ma. 50N=(25kg)(2m/s^2)

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