Answer:
1.2 s
Explanation:
Given:
v₀ = 8.0 m/s
v = -4.0 m/s
a = -10 m/s²
Find: t
v = at + v₀
(-4.0 m/s) = (-10 m/s²) t + (8.0 m/s)
t = 1.2 s
The wavelength<span> in a </span>longitudinal wave<span> is probably the distance between two consecutive compressions or between two consecutive rarefactions. The amplitude is the maximum displacement from equilibrium. ... The amplitude is the distance from the equilibrium position of the medium to a compression or a rarefaction.</span>
If the girl is also near the source of the sound, two alike sets of sounds will be heard.
To solve this problem it is necessary to apply the concepts related to the energy released through the mass defect.
Mass defect can be understood as the difference between the mass of an isotope and its mass number, representing binding energy.
According to the information given we have that the reaction presented is as follows:

The values of the atomic masses would then be:
Th = 232.037146 u
Ra = 228.028731 u
He = 4.0026
The mass difference of the reaction would then be represented as


From the international measurement system we know that 1 atomic mass unit is equivalent to 931.5 MeV,


Therefore the energy is 5.414MeV
The shape of a particle effect drag.