BS Bachelor of Science: Life, Physical, and Chemical 3

Question 1

According to Newton's second law of motion, if a net force of 20 N acts on a 4 kg object, what is its acceleration?

Accepted Answer

5 m/s²

Answer

F = ma, so a = F/m = 20 N / 4 kg = 5 m/s².

Question 2

Which type of electromagnetic radiation has the shortest wavelength?

Accepted Answer

Gamma rays

Answer

Gamma rays have the shortest wavelength (and highest frequency and energy) in the electromagnetic spectrum.

Question 3

A wave transfers energy from one place to another without transferring matter. Which property describes the number of wave cycles that pass a point per second?

Accepted Answer

Frequency

Answer

Frequency, measured in hertz (Hz), is the number of complete wave cycles that pass a given point per second.

Question 4

Which law states that the total momentum of a closed system remains constant if no external forces act on it?

Accepted Answer

Conservation of momentum

Answer

Conservation of momentum states that total momentum of an isolated system remains constant.

Question 5

In a simple electric circuit, if resistance doubles while voltage remains constant, what happens to the current?

Accepted Answer

Halves

Answer

By Ohm's law (I = V/R), doubling R while keeping V constant cuts current in half.

BS - Bachelor of Science Practice Test

BS - Bachelor of Science Practice Test

BS Bachelor of Science: Life, Physical, and Chemical 3