D FOUR years old hope this helps
mark brainliest please
By applying the wave equation we know that the maximum speed of the element's oscillatory motion is 1716 micrometer / s.
We need to know about wave equations to solve this problem. The displacement of the wave on the y-axis can be explained by the wave equation
y = A cos (kx - ωt)
where y is y-axis displacement, A is amplitude, k is wave number, x is x-axis displacement, ω is angular speed and t is time.
the wavenumber and angular speed of the wave equation can be determined respectively by
k = 2π / λ
ω = 2πf
where k is the wavenumber, λ is wavelength and f is frequency.
From the question above, we know that:
y = 2.00cos (15.7x - 858t)
v = dy / dt
v = d(2.00cos (15.7x - 858t)) / dt
v = -858 x (-2.00sin(15.7x - 858t))
v = 1716 sin(15.7x - 858t) micrometer/s
maximum velocity can be reached when (sinθ = 1), hence
v = 1716 sin(15.7x - 858t)
v = 1716 x 1
v = 1716 micrometer / s
For more on wave equation on: brainly.com/question/25699025
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The conversion factor you use is 100 cm = 1 m.
You can divide 20 by 100 to get the answer.
20 cm/100 cm =.2 m
Hope this helped!
Answer:
the greater the height of an object the *greater* its gravitational potential energy
greater
Answer:
A. Workdone by helium, W = -1.829KJ
B. Internal energy, DE = 25.271KJ
Explanation:
Workdone can be defined as the force moving through a distance. For a gaseous system, when the volume of the gas expands, the system is losing energy. Therefore,
W = -P*DV
Where P is the pressure in pascal
DV is the change in volume in m3
DV = Vfinal - Vinitial
= 23.70 - 5.30
= 18.4L
W = -(0.981 * 18.4)
= -18.0504L.atm
Converting L.atm to joule,
= -18.0504 * 101.325
= -1828.97J
= -1.829KJ
If the system loses heat, Q the rection occurring is Exothermic.
Heat is the transfer of energy from one system to another.
Q = mcDT
Where m is the mass of the system
C is the specific heat capacity
Q = 27.20KJ
Internal energy is the summation of the heat supplied to a system and the workdone by the system
DE = Q + W
DE = 27.10 + (-1.829)
= 25.27KJ
