What is voltage, and what is its relationship to amperage and power?
1 answer:
Explanation:
Amperage is the unit of electric current. It describes the strength of the electric current in a circuit.
The voltage is the driving force of the current in a circuit
Power is a function of voltage and current in the circuit.
Current is designate as I
Voltage as V
Power as P
I =
Where R is the resistance to flow of electricity
P = I x V =
The unit of power is watts and voltage is volts
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Answer:
d= 64.1 km θ = 36.4º
Explanation:
a) In order to find the plane's straight-line distance from the starting point, we need to know the coordinates of the final and initial position of the plane, so we can find the total displacement, as the difference between the final and initial position.
If we choose to put our origin at the initial point of trajectory, we have that (x₀, y₀) = (0, 0)
In order to find the position of the plane after finishing the flight, we need to find its final coordinates (x₁, y₁).
In order to get x₁, we need to add the x-coordinate after flying 45º north of east, and the Δx after completing the flight in a direction 25º of east, that we can find applying trigonometry, as follows:
x₁ = 37.0 km * cos 45º + 28.0 km* cos 25º = 51.6 Km
Appying the same considerations for the y-coordinate, we have:
y₁ = 37.0 km * sin 45º + 28.0 km* sin 25º = 38.0 km
Now, as the initial position coincides with the origin, the distance in a straight line from this point to the origin, is just the hypotenuse of the triangle determined by the coordinates (x₁, y₁) and (0,0), as follows:
The geographic direction of the displacement vector (which coincides in magnitude with the distance we have just found), is just the angle that this distance forms with the east axis, that we can find getting the tangent of this angle as follows:
tg θ =
⇒ θ = 36.4º North of East (counterclockwise from the east axis).
Answer:
L=31.9 mm
δ = 0.22 mm
Explanation:
Given that
v= 14 m/s
ρ=997 kg/m³
μ= 0.891 × 10⁻3 kg/m·s
As we know that when Reynolds number grater than 5 x 10⁵ then flow will become turbulent.
L=0.0319 m
L=31.9 mm
The thickness of the boundary layer at that location L given as
δ = 0.00022 m
δ = 0.22 mm