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.
Which of the following is TRUE of light and sound waves?
they both transmit energy
they both need a mediumfor propagation
they are both transverse waves
their velocities in air are equal
Correct answer is A
No explanation has been provided for this answer.
0.14s
0.43s
2.32s
6.97s
Correct answer is C
Total time = (3 x 60) + 29
= 209sec
period \(\frac{t}{n}\) = \(\frac{209}{90}\)
= 2.32sec
convection
radiation
conduction
reflection
Correct answer is B
No explanation has been provided for this answer.
The absolute temperature of a perfect gas is proportional to the average
potential energy of the molecules
seperation between the molecules
kinetic energy of the molecules
velocity of the molecules
Correct answer is C
No explanation has been provided for this answer.
84s
112s
168s
280s
Correct answer is C
Heat energy = Elect. energy
mc\(\theta\) = power x time
1 x 4200 x (50 - 20) = 750 x t
t = 168s