Answer:
The new intensity = 3.38 × 10⁻⁵ W/m²
Explanation:
Intensity of sound wave:
The intensity of sound is the rate of flow of flow of energy, per unit area, perpendicular to the direction of the sound wave.
Intensity (I) ∝ A²
where I = intensity, A = Amplitude.
∴ I₁/I₂ = A₁²/A²₂............................... equation 1
From the question, the amplitude increase by 30% of the initial
∴ A₂ = A₁ + 0.3A₁ = 1.3A₁, I₁ = 2.00×10⁻⁵ W/m²
∴ (2.00×10⁻⁵)/I₂ = A₁²/(1.3A₁)²
(2.00×10⁻⁵)/I₂ = 1/1.3²
making I₂ the subject of the equation
I₂ = (2.00 × 10⁻⁵)×1.3² = 3.38 × 10⁻⁵ W/m₂
The new intensity = 3.38 × 10⁻⁵ W/m²
Answer:
B) -2 Coulombs
Explanation:
In order to find the net charge, we must add the charge that you have with the charge that your friend has, but taking into account the different sign. In fact, we have:
- Charge possessed by you: Q1 = +3 C
- Charge possessed by your friend: Q2 = -5 C
Therefore, the net charge possessed by both persons will be given by
Q = Q1 + Q2 = +3 C + (-5 C) = +3 C - 5 C = -2 C
<span>Mass is inversely proportional to energy. The larger the mass, the smaller will be the energy.</span>
Answer:
Kinetic energy.
The explanation never existed
Answer:The pressure must be the same throughout the lift, so
P = F1/A1 = F2/A2 ⇒
A2 = (F2/F1)A1
F2 = 1,100 N
F1 = 15,000 N
A1 = 10 m2
Plug in the numbers and evaluate A2. The answer will come out in m2.
Explanation:
