Fusion and gravity is ur answer
Answer:
[OH⁻] = 1 × 10⁻¹¹ mol/dm³
Explanation:
Since the hydronium ion concentration of the gastric fluid is [H₃O]⁺ = 1.0 × 10⁻².
The pH at this point is pH = -log₁₀[H₃O]⁺ = -log₁₀[1.0 × 10⁻²] = 2
When milk of magnesia is added, the pH increases by one unit, so the new pH is 1 + 2 = 3
Since pH + pOH = 14, then pOH = 14 - pH = 14 - 3 = 11
The hydroxide ion concentration of the fluid is gotten from
pOH = -log₁₀[OH⁻]
11 = -log₁₀[OH⁻]
-11 = log₁₀[OH⁻]
taking antilog
[OH⁻] = 1 × 10⁻¹¹ mol/dm³
Answer:
θ₂ ≈ 29.7°
Explanation:
Given:
n₁ = 1.33, n₂= 1.60, θ₁ = 36.6°, θ₂ = ?
Solution:
According to snell's Law
n₁ sin θ₁ = n₂ sin θ₂
1.33 × sin (36.6°) = 1.60 × sin θ₂
⇒ Sin θ₂ = 0.496
θ₂ ≈ 29.7°
Explanation:
Momentum before collision:
(2 kg) (4 m/s) + (5 kg) (-3 m/s) = -3 kg m/s
No external forces act on the balls, so momentum is conserved. Therefore, momentum after collision is also -3 kg m/s.
