The velocity of a given wave remains the same while the wavelength increases. What happens to the frequency of the wave?
1 answer:
Answer:
B. It decreases proportionally to the wavelength
Explanation:
The relationship between wavelength, velocity, and frequency of a wave is given as;
where;
f is the frequency of the wave
v is the velocity of the wave
λ is the wavelength
From the equation above, the frequency of a wave is inversely proportional to its wavelength. As the wavelength increases, the frequency decreases and vice versa.
Therefore, the correct option is "B"
B. It decreases proportionally to the wavelength
You might be interested in
Answer:
Energy Lost for group A's car = 0.687 J
Energy Lost for group B's car = 0.55 J
Explanation:
The exact question is as follows :
Given - The energy of an object can be converted to heat due to the friction of the car on the hill. The difference between the potential energy of the car and its kinetic energy at the bottom of the hill equals the energy lost due to friction.
To find - How much energy is lost due to heat for group A's car ?
How much for Group B's car ?
Solution -
We know that,
GPE = 1 Joule (Potential Energy)
Now,
For Group A -
Energy Lost = GPE - KE
= 1 J - 0.313 J
= 0.687 J
So,
Energy Lost for group A's car = 0.687 J
Now,
For Group B -
Energy Lost = GPE - KE
= 1 J - 0.45 J
= 0.55 J
So,
Energy Lost for group B's car = 0.55 J
