Explanation:
a) Sum of moments about the pivot:
∑τ = Iα
(10 kg × 10 m/s²) (0.3 m) + F (-0.4 m) = 0
F = 75 N
b) Sum of moments about the pivot:
∑τ = Iα
(20 N) (0.3 m) + (20 N) (-0.2 m) + F (-0.7 m) = 0
6 Nm − 4 Nm + F (-0.7 m) = 0
F = 2.9 N
One result for the atoms that bonded together when a compound forms is a stable arrangement of electrons.
part 1
mass = ρ x V
mass = 1739 kg/m³ x 3.8 km³ = 6608.2 kg
PE (potential energy)= mgh
PE = 6608.2 kg x 9.81 x 403
PE = 2.61 x 10⁷ J
part 2
megaton of TNT (Mt) =4.2 x 10¹⁵ J
convert PE to Mt:
2.61 x 10⁷ J : 4.2 x 10¹⁵ J = 6.21 x 10⁻⁹ Mt
A) It will be 2 covalent bonds
B) covalent bonds occur when there’s 2 atoms that share electrons. In this case by sharing the 2 pairs of valence electrons each atom has a total of 8 valence electrons
