Answer: (c)Allotropy
Explanation: Allotropy is defined as the feature of the material to exist in different chemical forms or state while being in the same physical state. So, allotropy responsible for maintenance of the crystalline lattices during the temperature changes and does not alter the physical state of it. It helps elements to exist in different forms by modifying the structure of the chemical state.
Answer:
284.4 m/s
Explanation:
At the inlet of the nozzle P =1 atm.
Temperature T = 250° C
Velocity of the steam at the inlet V_1 = 30 m/s
Change in enthalpy Δh = 40 KJ/kg
let V_2 be the final velocity
then
Answer:
- the Young's modulus of the composite in the longitudinal direction = 87.4GPa.
- The tensile strength of the composite in the longitudinal direction = 1.26 × 10⁹.
Explanation:
The following parameters or data were given in this particular question/problem;
1. "The fibers are continuous, unidirectionally aligned and 40% by volume."
2." The tensile strength of carbon fibers is 2998 MPa, and the Young's modulus is 214 GPa."
3. " The tensile strength of the epoxy matrix is 100 MPa, and its Young's modulus is 3 GPa."
So, let us delve right into the solution to this question:
[ kindly note that part b. of this problem is the same as the part a. of the problem
Also, in point 2. above 2998MPa = 2.998 =GPa, approximately 3GPa].
40% = 40/100 = 0.4. Therefore, 1 - 0.4 = 0.6. Hence, the Young's modulus of the composite in the longitudinal direction = 3 × 0.6 + 214 × 0.4 = 1.8 + 85.6 = 87.4GPa
The tensile strength of the composite in the longitudinal direction = 100 × 10⁶ × 0.6 + 3 × 10⁹ ₓ 0.4 = 1.26 × 10⁹.
JavaScript is a scripting language.
<h3>What is JavaScript?</h3>
JavaScript is a language of programming, which is used for the purpose of scripting in such a way that the bit-sized codes are able to produce unique and ever-changing content on the web over a network of computers.
Hence, option A holds true that JavaScript is a scripting language.
Learn more about JavaScript here:
brainly.com/question/16698901
#SPJ1
Explanation:
<u>Ohmic Behavior:</u>
If the current "I" produced in a conductor due to voltage "V" applied across it, is directly proportional to that voltage while the resistance of the conductor is same/constant, the material is said to be ohmic material or possessing ohmic behavior. If the resistance of a conductor doesn't remain the same due to heat, material property or any other reason, non-ohmic behavior will be observed.
<u>Thermal Expansion vs Ohmic/Non-ohmic property:</u>
For a linear conductor, thermal expansion (may be due to heat produced in result of current flow) increases length of the material due to which its resistance increases directly. Whenever the resistance increases during the flow of a current, the non-ohmic behavior arises.
R = ρL/A
where,
R=Resistance of conductor
ρ=Resistivity of material
L=length of conductor
A=Cross-sectional area of the conductor.
But,
usually this change in length and consequently change is resistance is very minor, so ignoring this change, the non-ohmic property of material will be minor too.
<u>Non-Ohmic Property:</u>
Current flows in a conductor due to flow of electrons in it. When these flowing electrons interacts with other particles (electron or atoms' nucleus) heat is produced. Due to this heat, atomic particles vibrates with more speed resulting in more hindrance/resistance in the flow of electron i.e. Resistance of material is now increased, so this will result in Non-ohmic behavior because now for the same value of applied voltage V, the flow of electron (Current) will be lesser. This will result in deviation from straight line graph as well (picture is attached)