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.
Volume of tea V = 2.0L = 2000 mL density d = 1.01 g/ mL mass of tea m = V * d = 2000mL * 1.01g/mL = 2020 gWhen we assume that the tea was initially at 72, the final temperature of the tea in F is 91.
The answer in this question is B. 91
Answer:
c
Explanation:
Increasing the length of string to which the bob is attached, increases the radius of the circle on which the bob moves; and therefore, the frequency, or number of back and forth swings in a set time frame, will be less.
Answer:
<h2>Yes,</h2>
BMI is a simple indicator of weight for height and can't differentiate between muscle mass and fat mass. So BMI tends to overestimate the health risk for adults with a high muscle mass, such as some athletes, and underestimate the risk for adults with a low muscle mass, as can occur with sedentary lifestyles.
Explanation:
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