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oksian1 [2.3K]
3 years ago
6

Problematic substances mechanical engeneering???

Engineering
1 answer:
Sonja [21]3 years ago
6 0

Answer:

The climate crisis. ...

Making water clean and accessible. ...

Providing enough food. ...

Personalised and relevant education. ...

Improving health care. ...

The refugee crisis. ...

Cyber security. ...

Enlisting the youth

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X because it’s at the origin x and y
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How does a rudder help maneuver an airplane?
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It’s just helps it like
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3 years ago
An alloy to be used for a spring application must have a modulus resilience of at least 0.79 x 106 J/m3 (0.79 x 106 Pa). What mu
xxTIMURxx [149]

Answer:

4.13 MPa

Explanation:

Given

Modulus of elasticity = E = 102 GPa

E = 102 * 10^9

Modulus resilience U = 0.79 * 106Pa

Modulus of Resilience U = y²/2E --- Make y the subject of formula

y² = 2EU

y = √(2EU)

y = √(2 * 102 * 10^9 * 0.79 * 106)

y = √1.708296E13

y = 4133153.759540044

y = 4.13E6

y = 4.13MPa

3 0
3 years ago
a horizontal jet of water (at 100c) that is 6 cm in diameter and has a velocity of 20 m/s is deflected by the vane as shown. if
Reptile [31]

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 = 55 \mathrm{~m}^3 / \mathrm{h}=\frac{55}{3600} \mathrm{~m}^3 / \mathrm{s}$.

mean velocity at $2=12 \times 0.92=11.04 \mathrm{~m} / \mathrm{s}$

i) Force exerted in x - friction A C 1 =  Volume

F_{S_x} &=\rho A C_1\left[C_2 \cos \theta-C_1\right] \\

&=1000 \times \frac{55}{3600}\left[\left(11.04 \cos 158^{\circ}\right)-12\right]

i\rangle F_{\text {sc }}=\supseteq A c_1\left[C_2 \sin \theta\right] \\

&=1000 \times \frac{55}{3600} \times \text { TI. 04 } \sin (1589 \\

&F_{\text {syn }}=63.18 \mathrm{~N} \\

&\text { Angle } \Rightarrow \frac{F_{s y}}{F_{3 x}}-\tan \theta \\

&\tan \theta=\frac{63.18}{339.18}, \theta=160-10-5.3 \\

&\theta=\tan ^{-}\left(\frac{-63 \cdot 18}{339728}\right) \\

&\theta=-10.540^{\circ} \\

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:

brainly.com/question/24681896

#SPJ4

4 0
2 years ago
Exceeding critical mach may result in the onset of compressibility effects such as:______.
klio [65]

Answer:

Sound barrier.

Explanation:

Sound barrier is a sudden increase in drag and other effects when an aircraft travels faster than the speed of sound. Other undesirable effects are experienced in the transonic stage, such as relative air movement creating disruptive shock waves and turbulence. One of the adverse effect of this sound barrier in early plane designs was that at this speed, the weight of the engine required to power the aircraft would be too large for the aircraft to carry. Modern planes have designs that now combat most of these undesirable effects of the sound barrier.

4 0
3 years ago
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