Answer:
The answer is "
and 157.5 MPa".
Explanation:
In point A:
The strength of its products with both the grain dimension is linked to this problem. This formula also for grain diameter of 310 MPA is represented as its low yield point
Here y is MPa is low yield point, x is mm grain size, and k becomes proportionality constant.
Replacing the equation for each condition:
People can get yo = 275 MPa with both equations and k= 15.5 Mpa 
.
To substitute the answer,
In point b:
The equation is 
equation is:
by putting the above value in the formula we get the 
value that is= 157.5 MPa
Answer: False
Explanation: No, brass is not a ferrous alloy.
Ferrous alloys are those alloy which contain iron like cast iron, steel, strain-less steel, high carbon steel. Brass on the other hand does not contain any composition. of iron hence it can not be considered as a ferrous alloy. Brass comes under the category of non- ferrous made with a composition of copper and zinc, however their proportion is not strict and we can add other elements like aluminium or lead to alter its durability or corrosiveness.
Based on the maximum capacity as a result of the pipe-laying operations, and the maximum capacity without obstruction to the four-lane dual carriageway, the mean speed of traffic in the bottleneck is -2.73km.
<h3>What is the mean speed of traffic?</h3>
This can be found as:
= (Maximum restricted capacity - freeflowing rate) / (Kb - Ka)
= (1,100 - 1,500) / (209 - 62.5)
= -2.73 km/h
The rate that the queue outside the bottleneck grows is:
= Free flowing rate - (mean speed of traffic x ka)
= 1,500 - (-2.73 x 62.5)
= 1,670 veh/hour
Find out more on bottleneck at brainly.com/question/9551615
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