Change in pressure : 772-753 = 19 mm Hg
Since 1 mm Hg = 133 Pa Hg
Then, 19 mm Hg = 2527 Pa Hg
Area of rectangular pool = L* B = 11 x 21 = 231 m^2
To find the force, we multiply the area by the change in pressure: 2527 (231) = 583737N
The focus of an earthquake is internal and is harder to record than the waves of an epicenter, which are on the surface.
Answer:
40.0⁰
Explanation:
The formula for calculating the magnetic flux is expressed as:
where:
is the magnetic flux
B is the magnetic field
A is the cross sectional area
is the angle that the normal to the plane of the loop make with the direction of the magnetic field.
Given
A = 0.250m²
B = 0.020T
= 3.83 × 10⁻³T· m²
3.83 × 10⁻³ = 0.020*0.250cosθ
3.83 × 10⁻³ = 0.005cosθ
cosθ = 0.00383/0.005
cosθ = 0.766
θ = cos⁻¹0.766
θ = 40.0⁰
<em>Hence the angle normal to the plane of the loop make with the direction of the magnetic field is 40.0⁰</em>
Answer: 0j
Explanation:
At that point potential energy is zero and kinetic energy is maximum.. P. E=mgh=0
Answer:
A corrente elétrica que atravessa o aparelho de som é de 2 A.
LETRA C
Explanation:
A fórmula para se calcular a corrente, em função da potência e a tensão é a seguinte:
\begin{lgathered}W = A * V\\\\\boxed{A = \frac{W}{V} }\end{lgathered}W=A∗VA=VW
onde,
A: corrente;
W: potência, no caso, 254 W;
V: tensão, no caso, 127 V.
Aos cálculos:
A = W / V
A = 254 / 127
A = 2 A