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Physics

Learn the toughest concepts covered in Physics with step-by-step video tutorials and practice problems by world-class tutors

1. Intro to Physics Units

Introduction to Units

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1

concept

Introduction to Units & the SI System

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3m
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2

concept

Metric Prefixes

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6m
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3
Problem

The earth’s circumference is approximately 40.1 Mm (megameters). What is this circumference in kilometers?

4
Problem

Astronomers often detect radio waves with wavelengths of 3,000,000,000 nm. What is this wavelength expressed in decameters (dam)?

5

concept

Scientific Notation

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5m
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6
Problem

Rewrite 0.00016 kg in scientific notation.

7
Problem

Rewrite 299,800,000 m/s in scientific notation.

8

example

Rewriting in Scientific Notation

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9
Problem

Rewrite 3.41 × 10−4 in standard form:

10
Problem

Rewrite 9.98 × 107  in standard form.