OTEE General Science Principles 2

Question 1

According to Newton's Second Law of Motion, if a net force of 30 N acts on a 6 kg object, what is its acceleration?

Accepted Answer

5 m/s²

Answer

Newton's Second Law states F = ma, so a = F/m = 30/6 = 5 m/s².

Question 2

Which type of energy is stored in a compressed spring?

Accepted Answer

Elastic potential energy

Answer

A compressed spring stores elastic potential energy, which is released when the spring returns to its natural length.

Question 3

Which of the following best describes electrical resistance in a conductor?

Accepted Answer

The opposition to the flow of electric current

Answer

Electrical resistance is the opposition a material offers to the flow of electric current, measured in ohms.

Question 4

A wave with a frequency of 200 Hz and a wavelength of 1.5 m travels at what speed?

Accepted Answer

300 m/s

Answer

Wave speed = frequency × wavelength = 200 Hz × 1.5 m = 300 m/s.

Question 5

When light passes from air into water, it slows down and bends toward the normal. This phenomenon is called:

Accepted Answer

Refraction

Answer

Refraction is the bending of light as it passes from one medium to another due to a change in speed.

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