Answer:
None of the above
Explanation:
When energy is converted from one form to another in a chemical or physical change, none will change. This is due to the law of conservation of energy. It states that the total energy of the system remains constant. It only changes energy from one form of energy to another. So, the correct option is (d) "none of the above".
Answer: The width of bands will be 2λ
Explanation: Please see the attachments below
Answer:
50.3 m/s²
Explanation:
Centripetal acceleration is:
a = v² / r
where v is velocity and r is radius.
First, calculate the velocity. Velocity is distance divided by time. The distance is the number of circumferences traveled by the ball.
v = x / t
v = (15.0 × 2π × 0.230 m) / 6.37 s
v = 3.40 m/s
Therefore:
a = (3.40 m/s)² / 0.230 m
a = 50.3 m/s²
Complete question:
Calculate the length of a pipe that has a fundamental frequency of 232 Hz. (Take the speed of sound in air to be 343 m/s.)
a) Assume the pipe is closed at one end. m
(b) Assume the pipe is open at both ends. m
Answer:
(a) The length of the pipe if it is closed at one end is 0.37 m
(b) The length of the pipe if it is open at both ends is 0.74 m
Explanation:
Given;
fundamental frequency of the pipe, F₀ = 232 Hz
speed of sound in air, V = 343 m/s
(a) Assuming a closed pipe, the wavelength of the fundamental frequency is given by;
L = λ₀/4
λ₀ = 4L
The relationship between frequency, wavelength and speed is given by;
V = F₀λ₀
substitute the value of λ
V = F₀(4L)
V = 4F₀L
L = V / 4F₀
L = (343) / (4 x 232)
L = 0.37 m
(b) Assuming an open pipe, the wavelength of the fundamental frequency is given by;
L = λ₀/2
λ₀ = 2L
V = F₀λ₀
substitute the value of λ
V = F₀(2L)
V = 2F₀L
L = V / 2F₀
L = (343) / (2 x 232)
L = 0.74 m
