Physics Questions and Answers
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
A body moves with a constant speed but has an acceleration. This is possible if it
moves in a straight line
moves in a circle
is oscillating
is in equilibrum
has a varrying acceleration
Correct answer is B
No explanation has been provided for this answer.
13
15
16
19
Correct answer is C
No explanation has been provided for this answer.
The process whereby a substance changes from a solid to liquid when heat is applied, is called?
Evaporation
Vaporization
Fission
Fusion
Correct answer is D
No explanation has been provided for this answer.
The net charge on the atom is zero because
the electrons and the protons that are charged are in the nucleus
the total charge on the electrons is equal to the total charge on the protons
the neutrons from a shield around the charged protons
the number of electrons in an atom is half the number of protons
A and B above
Correct answer is B
An atom is defined as having the same number of electrons (negative charge), protons (positive charge) and neutrons (no charge). This means that it will have the same amount of negative and positive charge, giving it a net zero charge. On the other hand, an ion has different amount of electrons and protons.
Of the following, which is different from the others?
x-rays
gamma-rays
cathode rays
ultra violet rays
infrared rays
Correct answer is C
No explanation has been provided for this answer.