If a sound wave goes from a cold air region to a hot air region, its wavelength will?
increase
decrease
decrease then increase
remain constant
Correct answer is A
No explanation has been provided for this answer.
0.25 x 10\(^{-3}\)rads\(^{-1}\)
0.25 x 10\(^{-1}\)rads\(^{-1}\)
5.00 x 10\(^{2}\)rads\(^{-1}\)
2.50 x 10\(^{3}\)rads\(^{-1}\)
Correct answer is C
Using y = A sin (wt + 0)
Given y = 0.25 x 10\(^{-3}\)sin (500t - 0.025x)
By comparing, w = 5.00 x 10\(^{2}\)rads\(^{-1}\)
\(\frac{8}{33}\)kg
\(\frac{3.3}{80}\)kg
\(\frac{80}{33}\)kg
\(\frac{3.3}{8}\)kg
Correct answer is A
mc\(\Delta\theta\) = m\(\lambda\)f
2 x 400 (100 - 0) = m(3.3 x 10\(^{5}\))
m = \(\frac{2 \times 400 \times 100}{3.3 \times 10^{5}} = \frac{8}{33}\)kg
3.0 x 10\(^{2}\)km\(^{-1}\)
3.0 x 10\(^{3}\)km\(^{-1}\)
5.0 x 10\(^{3}\)km\(^{-1}\)
3.0 x 10\(^{4}\)km\(^{-1}\)
Correct answer is B
\(\Delta\) = \(\frac{\bigtriangleup\theta}{\delta} = \frac{80-20}{0.02}\)
= 3.0 x 10\(^{3}\)km\(^{-1}\)
I, II and III only
I, II, III, and IV
I, II, and IV
II, III, and IV
Correct answer is A
The boiling point of a liquid depends on temperature, atmospheric pressure, and the vapor pressure of the liquid.
When the atmospheric pressure is equal to the vapor pressure of the liquid, boiling will begin