The correct option is (A) 2.5 m/s
Explanation:
Since,
v = fλ ---- (1)
where v = speed of the wave
f = frequency of the wave = 5 Hz
λ = wavelength of the wave = 0.5
Plug in the value in (1):
(1) => v = 5 * 0.5
v = 2.5 m/s
Answer;
C. if water plants take in co2, then the solution will turn from yellow to blue.
Explanation;
-Bromothymol blue is a pH indicator that is mostly used in applications that require measuring substances that would have a relatively neutral pH. A common use is for measuring the presence of carbonic acid in a liquid or dissolved carbon dioxide.
-The indicator changes color over a pH range from 6.0 (yellow) to 7.6 (blue). It is a good indicator of dissolved carbon dioxide (CO2) and other weakly acidic solutions.
-Low levels of carbon dioxide or acid in solution with bromothymol blue indicator will appear blue. As the level of carbon dioxide or acid increases, the solution will gradually take on a yellow tint.
Answer:
Transverse Wave
Explanation:
Longitudinal: vibrates in the same direction
Propagated: the direction the wave travels (specific to wave type)
Amplitude: from equilibrium to crest or trough
Answer:
The disintegrations is 
.
Explanation:
Given that,
Weight of sample = 200 g
Decay constant 
We need to calculate the disintegrations
Using formula of disintegrations
Where, 
= decay constant
N = number of atoms present at time t
Put the value into the formula
Hence, The disintegrations is .
