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.
11.27N
33.81N
112.70N
338.10N
Correct answer is D
M = D x V
= 980 x 0.046 x \(\frac{3}{4}\) = 33.81kg
upthrust = mg = 33.81 x 10
= 338.1N
800N
500N
80N
50N
Correct answer is A
\(F_2 = \frac{F_1 \times A_2}{A_1} = \frac{40 \times 200}{10} = 800N\)
weight
density
pressure
volume
Correct answer is D
No explanation has been provided for this answer.
In which of the following states of matter do the molecules vibrate about their mean positions?
liquids only
solids only
liquids and gasses only
solids, liquids and gases
Correct answer is B
No explanation has been provided for this answer.
A radioactive element has a decay constant of 0.077s-1. Calculate its half-life
13.0s
9.0s
5.1s
0.5s
Correct answer is B
\(t_{\frac{1}{2}} = \frac{0.693}{\lambda} = \frac{0.693}{0.077} = 9s\)