Mackenzie creates a transverse wave using a rope tied to a tree, as shown in the diagram.
1 answer:
C. She increases the amplitude of the wave
Explanation:
For a wave:
- The amplitude is the maximum displacement of the wave relative to its equilibrium position
- The wavelength is the distance between two points of the same with same shape (e.g. between two crests or two troughs)
For a mechanical wave (a wave that is produced by the vibrations of the particles in a medium), the energy of the wave is proportional to the square of its amplitude:
where
A is the amplitude
E is the energy
Therefore, by increasing the amplitude of the wave, we also increase its energy. So, the correct option is
C. She increases the amplitude of the wave
Learn more about waves:
#LearnwithBrainly
You might be interested in
Explanation:
The given data is as follows.
= 50 ml,
= 345 K
= 298 K,
= 317 K,
= 50 ml
Now, we will calculate the heat energy as follows.
=
= 5857.6 J
=
= 3974.8 J
As, so there will be loss of heat. And, some heat will go to the calorimeter.
Hence,
= 1882.8 J
We assume that the temperature of (calorimeter + water) is 298 K. Hence,
dT =
= (317 - 298) K
= 19 K
Hence, we will calculate the specific heat as follows.
C =
=
= 99.1 J/K
Thus, we can conclude that the value of for the calorimeter is 99.1 J/K.