Answer:
The correct option is;
A) Steel becomes too hot in the Sun and can burn the children
Explanation:
The properties of steel includes;
Low specific heat capacity, high thermal and electrical toughness, high hardness, high tensile strength, high yield strength, appreciable elongation, high fatigue strength, can easily corrode, high malleability and ability to creep
Therefore, due to the low specific heat capacity, which is 0.511 J/(g·°C) and high conductivity of steel which is about 32 W/(m·k), the temperature of the steel can rapidly rise and the hot steel surface can readily conduct the heat, (due to the temperature difference) to other bodies that come in contact
Answer:
<em>0.0386 hr</em>
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Explanation:
Area = 565 cm^2 = 0.0565 m^2 (1 cm^2 = 0.0001 m^2)
flux state rate = 220 mole/m^2-day
<em>There are 24 hrs in a day,</em> therefore rate in hrs will be
220/24 = 9.17 mole/m^2-hr
mass of water = 0.4 kg
molar mass of water = (1 x 2) + 16 = 18 kg/mole
therefore,
<em>mole of water = mass of water/molar mass of water</em>
mole of water = 0.4/18 = 0.02 mole
<em>mole flux = mole/area</em> = 0.02/0.0565 = 0.354 mol/m^2
<em>time that will be taken will be for water to pass = mole flux/mole flux rate</em>
time = 0.354/9.17 = <em>0.0386 hr</em>
Answer:
Check the explanation
Explanation:
Kindly check the attached image below for the step by step explanation to your answer.
The magnitude of applied stress in the direction of 101 is 12.25 MPA and in the direction of 011, it is not defined.
Explanation:
Given:
tensile stress is applied parallel to the [100] direction
Shear stress is 0.5 MPA.
To calculate:
The magnitude of applied stress in the direction of [101] and [011].
Formula:
zcr=σ cosФ cosλ
Solution:
For in the direction of 101
cosλ = (1)(1)+(0)(0)+(0)(1)/√(1)(2)
cos λ = 1/√2
The magnitude of stress in the direction of 101 is 12.25 MPA
In the direction of 011
We have an angle between 100 and 011
cosλ = (1)(0)+(0)(-1)+(0)(1)/√(1)(2)
cosλ = 0
Therefore the magnitude of stress to cause a slip in the direction of 011 is not defined.
