The nucleus is a Negative charge I believe
The are called alakali earth metals.
Let's call
the frequency of the nth-harmonic and
the frequency of the (n+1)th harmonic, wish is the next harmonic.
Since the frequency of the nth-harmonic is n times the fundamental frequency f1:
then the difference between two successive harmonics is equal to the fundamental frequency of the tube:
so, by using 350 Hz and 280 Hz as successive harmonics, we find the fundamental frequency of the tube:
The wavelength of the first harmonic is twice the length of the tube:
And since we know both frequency and wavelength, we can find the speed of the wave in the tube, which is the speed of sound in the gas in the tube:
answer - d
set up equation
the velocity can be found through the change in kinetic energy
due to the conversation of energy, the change in kinetic energy is the same as the change in potential energy when the height is changed
ΔK =
ΔU = mgΔh
ΔK = ΔU
= mgΔh
= 2gΔh
v =
values
g = 9.8
Δh = 42 - 4.2 = 37.8 m
plug in values
v =
v =
v = 27.2
answer choice D
Answer:
Explanation:
Given
velocidad
tiempo tomado
Convertir km/h en m/s
La aceleración está dada por la tasa de cambio de velocidad
Por tanto, la aceleración es