Answer:
Explanation:
Representing the velocity of oxygen atom in vector form
v₁ = 733 cos 15 i + 733 sin15 j
= 708 i +189.7 j
Similarly velocity of oxygen molecule
= 528 cos 128 i + 528 sin128 j
= -325 i + 416 j
Applying conservation of momentum
m₁ v₁ + m₂v₂ = ( m₁ +m₂ ) v
16 ( 708 i +189.7 j ) + 32 ( -325 i + 416 j ) = 48 v
11328 i +3035.2 j - 10400 i + 13312 j = 48 v
928 i + 16347.2 j = 48 v
v = 19.33 i + 340.56 j
angle of this vector
tanθ = 340.56 / 19.33
= 17.61
87 °