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.
increased
decrease
remains the same
is doubled
Correct answer is B
No explanation has been provided for this answer.
40.0N
20.0N
5.0N
2.5N
Correct answer is D
\(g_1 = \frac{Gm_1m_2}{r^2_1}\)
\(m_1m_2 = \frac{gr^2_1}{G}\)
\(g_2 = \frac{Ggr^2_1}{Gr^2_2} = \frac{10 \times 0.1^2}{0.2^2}\)
= 2.5N
130.6Hz
182.9Hz
358.4Hz
501.8Hz
Correct answer is C
\(\frac{f}{256} = \sqrt{\frac{196}{100}}\)
f = \(\sqrt{\frac{256^2 \times 196}{100}}\)
= 356.4Hz
stationary and longitudinal
stationary and mechanical
mechanical and longitudinal
progressive and transverse
Correct answer is A
No explanation has been provided for this answer.
Which of the following statements about sound is correct?
when sound travels from air to a denser medium, it is refracted away from the normal at the point of incidence
sound travels faster in air than in water
the wavelength of sound changes when it travels from to water
the frequency of it travels from air to water
Correct answer is C
No explanation has been provided for this answer.