An elliptical galaxy<span> is a type of </span>galaxy<span> having an approximately ellipsoidal shape and a smooth, nearly featureless brightness profile. Unlike flat spiral </span>galaxies<span> with organization and structure, they are more three-dimensional, without much structure, and their </span>stars are<span> in somewhat random orbits </span>around<span> the center.</span>
Complete Question
The complete question is is shown on the first uploaded
Answer:
The elastic potential energy at point B is 
The kinetic energy at point D is 
Explanation:
Looking at the given point we can observe that mechanically energy(i.e potential and kinetic energy ) is conserved and it value is 
So at point B
KE at point B is 50J
So 
Now at point D
at point D is 25J
So 
<span>Energy is calculated by molecule dividing energy by mole by Avogadro's number (6.022*10^23)
941kJ=9.41*10^5 J
so energy by molecule
E= 9.41*10^5/6.022*10^23=1.563*10^-18 J
Wavelength (w) given by E=hc/w
where, E = energy
h = planks constant (6.6262 x 10-34 J·s)
c = speed of light (3 x 10^8 m/s )
So,
w= hc/E
= (6.6262*10^-34)*(3*10^8) /1.563*10^-18
= 127.2 Nm
Longest wavelength of radiation =127.2 Nm</span>
E force needed to accelerate a 68 kilogram-skier at a rate of
1.2
m
s
2
is 81.6 Net forces.
Explanation:
Take the mass(68kg) and the acceleration of the skier(
1.2
m
s
2
) and multiply them together
