Answer:
Gravity
Explanation:
The answer is gravity because when the 3 masses were hung from the spring, gravity pulled the spring towards the ground.
Answer:
A) greater
Explanation:
acceleration is calculated by dividing velocity over time..so by calculating, you find acceleration of A is greater than that of B
Answer:
B. In mercury, the frequency of the wave is the same as in ethanol, but the wavelength is greater.
Explanation:
To solve this easily, we can just calculate the wavelength of the sound in Ethanol and in Mercury.
In Ethanol, the wavelength will be:
λ = c/f
λ = 1160/440
λ = 2.63 m
In Mercury, the wavelength will be:
λ = c/f
λ = 1450/440
λ = 3.3 m
The wavelength of sound is greater in Mercury than in Ethanol but the frequency is the same.
Frequency of sound is not dependent on medium, but velocity and wavelength change depending on the medium.
