AFOQT Physical Science Principles 3

Question 1

How much work is done lifting a 5 N weight a vertical height of 2 m?

Accepted Answer

10 J

Answer

Work equals force times distance, so 5 N × 2 m = 10 J.

Question 2

Which type of heat transfer occurs through direct contact between particles?

Accepted Answer

Conduction

Answer

Conduction transfers heat through direct particle-to-particle contact.

Question 3

What is the density of a 200 g object with a volume of 50 cm³?

Accepted Answer

4 g/cm³

Answer

Density equals mass divided by volume: 200 g ÷ 50 cm³ = 4 g/cm³.

Question 4

In a chemical equation, what must be equal on both sides?

Accepted Answer

The number of atoms of each element

Answer

The law of conservation of mass requires equal atoms of each element on both sides.

Question 5

Two resistors of 4 Ω each are connected in series. What is the total resistance?

Accepted Answer

8 Ω

Answer

Series resistances add directly, so 4 Ω + 4 Ω = 8 Ω.

AFOQT Practice Test