Chapter 2 - Foundations of Physics

Question 1

How many meters in a femto-meter? (fm)

Answer 1

1 Femto-meter = 10^-15 meters.

Question 2

How many meters in a pico meter? (pm)

Answer 2

1 pico meter = 10^-12 meters.

Question 3

How many meters in a nano meter? (nm)

Answer 3

1 nano meter = 10^-9 meters.

Question 4

How many meters in a micro meter? (µm)

Answer 4

1 micro meter = 10^-6 meters.

Question 5

How many meters in a milli meter? (mm)

Answer 5

1 milli meter = 10^-3 meters.

Question 6

How many meters in a Mega meter? (Mm)

Answer 6

1 Mega meter = 10^6 meters.

Question 7

How many meters in a Giga meter? (Gm)

Answer 7

1 Giga meter = 10^9 meters.

Question 8

How many meters in a tera meter? (Tm)

Answer 8

1 Tera meter = 10^12 meters.

Question 9

How many meters in a Peta meter? (Pm)

Answer 9

1 Peta meter = 10^15 meters.

Question 10

How do you find the resultant of two force vectors that act perpendicularly to each other?

Answer 10

To find the the resultant vectors, simply use triangle theorems to calculate the resolved component, (the hypotenuse).

Question 11

How do you resolve a vector into its two perpendicular components?

Answer 11

To find the perpendicular components of a vector, you resolve:
Fx = Fcosθ
Fy = Fsinθ

Multiple force vectors should be resolved using Pythagoras Theorem and Trigonometry.