It should be the second one
Body Centered Cubic Structure<span>. - </span>Every atom except those<span> on the </span>surface<span>; </span>has eight neighbors<span>. Metals that </span>have<span> this </span>arrangement<span>: Sodium, Potassium, Iron.
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Answer:
We know that potential energy of a body;
= mass(m)× gravitational acceleration(g) × height(h)
Lets find out the mass of the body
P.E. = mgh
=> 6500J = mass × 9.8m/s^2 × 12m
=>6500J = mass × ( 9.8 × 12 ) × ( m/s^2 × m)
=> 6500 Nm = m × 117.6 × m^2 / s^2
=> 6500/117.6 Ns^2/m = mass [°.° Ns^2/m = kg]
=> 55.272 Kg = mass
Therefore the mass of the body = 55.272 kg ~ <em>6</em><em>0</em><em> </em><em>k</em><em>g</em><em> </em>(Ans)
Hope it helps you
Answer:
the fraction of the total energy (Etot) of the cart-spring system is elastic potential energy (Us) is 0.25
the fraction is kinetic energy (K) when the cart is at position x=A/2 is 0.75
Explanation:
the solution is in the attached Word file
