The specific gravity of a substance that has mass of 10 kg and occupies a volume of 0.02 m^3 is a) 0.5 b) 1.5 c) 2.5 d) 3.5 e) n
1 answer:
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The net resultant direct force and angle on the vane is created when the water jet exits the vane at position 2 with 92% of its initial velocity.
<h3>What is mean by velocity?</h3>- The speed at which a body or object is moving determines its direction of motion. A scalar quantity, speed is primarily. As a matter of fact, velocity is a vector quantity.
- The rate at which distance changes is what it is. It measures the displacement's rate of change. A body's velocity is defined as its speed in a particular direction.
- Velocity is a measure of how quickly a distance changes in relation to time. Having both magnitude and direction, velocity is a vector quantity.
- The rate of change in a body's displacement with respect to time is referred to as velocity. In the SI, m/s is its unit.
Given,
External angle of Curved Vane = 158°
mean velocity at 1 = 12 m/s
Volumetric flow rate =
mean velocity at
i) Force exerted in x - friction A C 1 = Volume
i
The complete question is:
A horizontal jet of water strikes a curved vane as shown in Figure C.1. The external angle of the curved vane is 158°.The mean velocity and volumetric flow rate of the water jet at position 1 are 12 m/s and 55 m³/h respectively. Due to friction, the water jet leaves the vane at position 2 with 92 % its original velocity.
(i) Direct force exerted by the water jet on the vane in the x - direction.
(ii) Direct force exerted by the water jet on the vane in the y - direction.
(ii) Net resultant direct force and angle on the vane.
To learn more about velocity, refer to:
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Answer:
a) i) Vd = 358 mV , Vd = 417.5 mV, Vd = 477.2 mV
ii) Vd = -17.9 mV
b) Vd = 477.2 mV, Vd = 536.8 mV, Vd = 596.5 mV
Vd = 161 mV
Explanation:
We will use the <u>ideal diode equation</u>:
Where Id = Diode current
Is = Reverse Saturation Current
Vd = Diode Voltage
q = charge of electron
n = ideality factor
k = Boltzmann constant
T = Temperature in Kelvin
(a) We are given:
Is = 10⁻¹¹ A
i) <u>Id = 10 μA</u>
Ideally, kT/q = 25.9mV and n=1. So,
q/nkT = 38.6
Id = Is e^(38.6Vd) -1
Id/Is + 1 = e^(38.6Vd)
ln(Id/Is + 1) = 38.6Vd
Vd = ln(Id/Is + 1)/38.6
= ln [(10*10⁻⁶)/10⁻¹¹ + 1] / 38.6
= 13.815/38.6
Vd = 0.3579
Vd = 358 mV
<u>Id = 100 µA</u>
Vd = ln(Id/Is + 1)/38.6
= ln [(100*10⁻⁶)/10⁻¹¹ + 1] / 38.6
= 16.118/38.6
Vd = 0.4175
Vd = 417.5 mV
<u>Id = 1 mA</u>
Vd = ln(Id/Is + 1)/38.6
= ln [(1*10⁻³)/10⁻¹¹ + 1] / 38.6
= 18.420/38.6
Vd = 0.4772
Vd = 477.2 mV
ii) Id = -5 x 10⁻¹² A
Vd = ln(Id/Is + 1)/38.6
= ln [(-5 x 10⁻¹²)/10⁻¹¹ + 1] / 38.6
= -0.693/38.6
Vd = -0.0179 V
Vd = -17.9 mV
(b) Is = 10⁻¹³ A
i) <u>Id = 10 µA</u>
Vd = ln(Id/Is + 1)/38.6
= ln [(10 x 10⁻⁶)/10⁻¹³ + 1] / 38.6
= 18.42/38.6
Vd = 0.4772 V
Vd = 477.2 mV
<u>Id = 100 µA</u>
Vd = ln(Id/Is + 1)/38.6
= ln [(100 x 10⁻⁶)/10⁻¹³ + 1] / 38.6
= 20.723/38.6
= 0.5368 V
Vd = 536.8 mV
<u>Id = 1 mA</u>
Vd = ln(Id/Is + 1)/38.6
= ln [(1 x 10⁻³)/10⁻¹³ + 1] / 38.6
= 23.025/38.6
= 0.5965
Vd = 596.5 mV
ii) Id = -5 x 10⁻¹² A
Vd = ln(Id/Is + 1)/38.6
= ln [(-5 x 10⁻¹²)/10⁻¹³ + 1] / 38.6
= ln (-49) / 38.6
Not possible.
<u>Is = -10⁻¹⁴</u>
<u>Id = -5 x 10⁻¹² A</u>
Vd = ln(Id/Is + 1)/38.6
= ln [(-5 x 10⁻¹²)/-10⁻¹⁴ + 1] / 38.6
= 6.216/38.6
Vd = 0.161 V
Vd = 161 mV