Answer:
C IS THE ANSWER
Explanation:
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Answer:
25 mm = 0.984252 inches
Explanation:
Millimeter and inches are both units of distance. The conversion of millimeter into inches is shown below:
<u>1 mm = 1/25.4 inches</u>
From the question, we have to convert 25 mm into inches
Thus,
<u>25 mm = (1/25.4)*25 inches</u>
So,
![25 mm=\frac{25}{25.4} inches](https://tex.z-dn.net/?f=25%20mm%3D%5Cfrac%7B25%7D%7B25.4%7D%20inches)
Thus, solving we get:
<u>25 mm = 0.984252 inches</u>
Answer:
189.15cy
Explanation:
To understand this problem we need to understand as well the form.
It is clear that there is four wall, two short and two long.
The two long are ![\rightarrow 120ft5in+2(10ft)](https://tex.z-dn.net/?f=%5Crightarrow%20120ft5in%2B2%2810ft%29)
The two long are ![\rightarrow 122ft1in=122.08ft](https://tex.z-dn.net/?f=%5Crightarrow%20122ft1in%3D122.08ft)
The two shors are ![\rightarrow 86ft4.5in = 86.375ft](https://tex.z-dn.net/?f=%5Crightarrow%2086ft4.5in%20%3D%2086.375ft)
The height and the thickness are 14ft and 0.83ft respectively.
So we only calculate the Quantity of concrete,
![Q_c = [(2*122.08)+(2*86-375)]*14*0.833\\Q_c=4864.02ft^3](https://tex.z-dn.net/?f=Q_c%20%3D%20%5B%282%2A122.08%29%2B%282%2A86-375%29%5D%2A14%2A0.833%5C%5CQ_c%3D4864.02ft%5E3)
That in cubic yards is equal to ![180.15 (1cy=27ft^3)](https://tex.z-dn.net/?f=180.15%20%281cy%3D27ft%5E3%29)
Hence, we need order 5% plus that represent with the quantity
![Q_{ordered}=1.05*180.15=189.15cy](https://tex.z-dn.net/?f=Q_%7Bordered%7D%3D1.05%2A180.15%3D189.15cy)
Answer:
4140 steel contains 0.4% C having higher yield strength and ultimate strength than the 1045 steel contains 0.45% C
Explanation:
we have given 4140 steel contains 0.4% C
we know here that 4140 steel is low steel alloy , and it have low amount of chromium , manganese etc alloying element
and these elements which are present in 4140 steel they increase yield strength and ultimate strength of steel
while in 1045 steel contains 0.45 % c is plain carbon steel
and it do not contain any alloying element
so that 4140 steel contains 0.4% C having higher yield strength and ultimate strength than the 1045 steel contains 0.45% C
Answer:
8 to 10 times
Explanation:
For dry road
u= 15 mph ( 1 mph = 0.44 m/s)
u= 6.7 m/s
Let take coefficient of friction( μ) of dry road is 0.7
So the de acceleration a = μ g
a= 0.7 x 10 m/s ² ( g=10 m/s ²)
a= 7 m/s ²
We know that
v= u - a t
Final speed ,v=0
0 = 6.7 - 7 x t
t= 0.95 s
For snow road
μ = 0.4
de acceleration a = μ g
a = 0.4 x 10 = 4 m/s ²
u= 30 mph= 13.41 m/s
v= u - a t
Final speed ,v=0
0 = 30 - 4 x t'
t'=7.5 s
t'=7.8 t
We can say that it will take 8 to 10 times more time as compare to dry road for stopping the vehicle.
8 to 10 times