Topic 1.1: The Realm of Physics

Question 1

What is the order of magnitude for the radius of a proton?

Answer 1

10^-15 m

Question 2

What is the order of magnitude for the radius of an atom?

Answer 2

10^-10 m

Question 3

What is the order of magnitude for the radius of a virus?

Answer 3

10^-7 m

Question 4

What is the order of magnitude for the radius of an amoeba?

Answer 4

10^-4 m

Question 5

What is the order of magnitude for the height of a human being?

Answer 5

10^0 m

Question 6

What is the order of magnitude for the radius of earth?

Answer 6

10^7 m

Question 7

What is the order of magnitude for the radius of sun?

Answer 7

10^9 m

Question 8

What is the order of magnitude for the radius of the earth-sun distance?

Answer 8

10^11 m

Question 9

What is the order of magnitude for the radius of the solar system?

Answer 9

10^13 m

Question 10

What is the order of magnitude for the distance of sun to the nearest star?

Answer 10

10^16 m

Question 11

What is the order of magnitude for the radius of the milky way galaxy?

Answer 11

10^21 m

Question 12

What is the order of magnitude for the radius of visible Universe?

Answer 12

10^26 m

Question 13

State the ranges of magnitude of distances

Answer 13

 Sub-nuclear particles to extent of the visible universe

• 10^-15 m to 10^25 m

Question 14

State the ranges of magnitude of masses

Answer 14

 Electron to mass of the universe

• 10^-30 kg to 10^50 kg

Question 15

State the ranges of magnitude of time

Answer 15

 Passage of light across a nucleus to the age of the universe
• 10^-23 s to 10^18 s

Question 16

• 1.1.3: State ratios of quantities as differences of orders of magnitude

Answer 16

The ratio of the diameter of the hydrogen atom to its nucleus is about 10^5