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Natasha_Volkova [10]
3 years ago
12

Crest is to high, as through is to

Engineering
2 answers:
Aneli [31]3 years ago
7 0

Answer:

Low.

Explanation:

This is encountered in sound waves propagation.

nlexa [21]3 years ago
5 0

Answer:

low

Explanation:

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All arrived at an uncontrolled intersection at the same time. which has the right-of-way?:
Molodets [167]

If two vehicles arrive at an uncontrolled intersection almost simultaneously, the driver of the car that arrived at the intersection last must give the right of way. The driver on the left has the right of way if you both arrive at the intersection at the same moment.

Which driver should yield at an uncontrolled T-intersection?

The driver of the car turning must give way to all oncoming cross traffic when two cars are approaching an uncontrolled "T" crossroads. You need to stop and give way to vehicles and pedestrians while entering a public road from a driveway or private road.

What is right of way?

When two vehicles or pedestrians are approaching from opposite directions, moving at a speed, and close enough to create a collision, one has the right to move forward legally before the other, unless the other gives way.

Learn more about uncontrolled intersection: brainly.com/question/14312150

#SPJ4

4 0
2 years ago
If the maximum allowable shear stress is 70 MPa, find the shaft diameter needed to transmit 40 kW when the shaft speed is 250 rp
victus00 [196]

Answer:

The diameter is 50mm

Explanation:

The answer is in two stages. At first the torque (or twisting moment) acting on the shaft and needed to transmit the power needs to be calculated. Then the diameter of the shaft can be obtained using another equation that involves the torque obtained above.

T=(P×60)/(2×pi×N)

T is the Torque

P is the the power to be transmitted by the shaft; 40kW or 40×10³W

pi=3.142

N is the speed of the shaft; 250rpm

T=(40×10³×60)/(2×3.142×250)

T=1527.689Nm

Diameter of a shaft can be obtained from the formula

T=(pi × SS ×d³)/16

Where

SS is the allowable shear stress; 70MPa or 70×10⁶Pa

d is the diameter of the shaft

Making d the subject of the formula

d= cubroot[(T×16)/(pi×SS)]

d=cubroot[(1527.689×16)/(3.142×70×10⁶)]

d=0.04808m or 48.1mm approx 50mm

7 0
4 years ago
Using the AASHTO 1993 Flexible Pavement Design Procedure, design a pavement cross section that will provide 10 years service. Th
natali 33 [55]

Answer:

Check the explanation

Explanation:

Single Unit Truck ESAL = 43.38 + 5.16 = 48.54

Semi Unit Truck ESAL = 43.38+ 6.00+7.4 = 56.78

So total ESAL's during design life = (400*48.54 + 350*56.78)*365*10/18000 = (19416+19873)*3650= 3939

Kindly check the attached image

Here

Reliability = 95% = 0.95, therefore ZR = -1.645, S0 = 0.4, MR = 18

Delta PSI = 4.2-2.5= 1.7

Resilient Modulus = 18000 psi, So MR = 18

Assume SN = 3.0 for flexible pavements

There W18 calculates to 0.26807

So

log10 (3939) = 9.36*log10(SN+1) -.2/(.4+1094/(SN+1)5.19)) -6.01

Structural Number SN = a1*d1 + a2*d2 *m2 +a2*d3 *m3

= a1*d1 + a2*d2 +a2*d3

5 0
3 years ago
Impedance is defined as the total opposition to current in an AC circuit. Question 17 options: True False
ArbitrLikvidat [17]

Answer: True

Explanation:

The total opposition to current flow in an AC circuit is known as Impedance.

8 0
2 years ago
An uncharged capacitor is connected to a resistor and a battery. Choose what happens to current, potential difference and charge
Ilya [14]

Answer:

  • The charge on the plates will increase with time
  • The potential difference across the capacitor starts with zero and then increases gradually to a maximum value
  • The current through the circuit starts high and then drops exponentially

Explanation:

<u>Case : An uncharged capacitor is connected to a resistor and a battery in a closed circuit.</u>

  • The charge on the plates will increase with time

applying this equation : Q = Q_{0}  [ 1 - e^{\frac{-t}{RC} } ]  as the value of (t) increases the value of Q increases i.e. charge on the plates

  • The potential difference across the capacitor starts with zero and then increases gradually to a maximum value

applying this equation : V = V_{0}  [ 1 - e^{\frac{-t}{RC} } ]

  • The current through the circuit starts high and then drops exponentially

current : I = I_{0}  e^{\frac{-t}{RC} }

6 0
3 years ago
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