Some sort of magnetic metal
Metals are heavier per cubic unit than other materials such as air or water, and also are much more magnetic than other materials
WHY HELLO THERE! THE PREFIX NANO MEANS ''1 BILLIONTH OF'' AND IS USED MOSTLY WHEN TALKING ABOUT THE METRIC SYSTEM. HOPE THIS HELPED!!!!!
Answer:
(a) Stiffness is measured by Young modulus
(b) Strength is measured as tensile stress in force per unit area
(c) Ductility is measured by elongation and reduction of area.
(d) Toughness is measured by the amount of energy that a unit volume of the material has absorbed after being stressed up to the point of fracture.
(e) Hardness is obtained by measuring the size of the impression left by an indenter
Explanation:
Mechanical properties are helpful in determining whether or not a material can be produced in the desired shape and also resist the mechanical forces anticipated.
Given mechanical properties of metals and how they are measured is as follows:
(a) Stiffness is the ability of a material to resist deformation under stress. It is measured by Young modulus
(b) Strength is the ability of a material to resist the externally applied forces without breaking or yielding. It is measured as tensile stress in force per unit area
(c) Ductility is the property of a material enabling it to be drawn into a wire with the application of a tensile force. It is measured by elongation and reduction of area.
(d) Toughness is the property of a material to resist fracture due to high impact. It is measured by the amount of energy that a unit volume of the material has absorbed after being stressed up to the point of fracture.
(e) Hardness is the property of a metal, which gives it the ability to resist being permanently deformed, when a load is applied. It is obtained by measuring the size of the impression left by an indenter
The energy of a photon when the frequency is 5 x 10¹⁴ Hz is 2.07 eV.
The energy of a photon when the frequency is 10 GHz is 4.14 x 10⁻⁵ eV.
The energy of a photon when the frequency is 30 MHz is 1.24 x 10⁻⁷ eV.
<h3>
Energy of a photon</h3>
The energy of a photon is calculated from the product of frequency and Planck's constant.
E = hf
where;
- h is Planck's constant
- f is frequency of the photon
<h3>when the frequency = 5 x 10¹⁴ Hz</h3>
E = 6.626 x 10⁻³⁴ x 5 x 10¹⁴
E = 3.313 x 10⁻¹⁹ J
E = (3.313 x 10⁻¹⁹ J) / (1.6 x 10⁻¹⁹)
E = 2.07 eV
<h3>when the frequency = 10 GHz = 10 x 10¹⁰ Hz</h3>
E = 6.626 x 10⁻³⁴ x 10 x 10¹⁰
E = 6.626 x 10⁻²⁴ J
E = (6.626 x 10⁻²⁴ J) / (1.6 x 10⁻¹⁹)
E = 4.14 x 10⁻⁵ eV
<h3>when the frequency = 30 MHz = 30 x 10⁶ Hz</h3>
E = 6.626 x 10⁻³⁴ x 30 x 10⁶
E = 1.988 x 10⁻²⁶ J
E = ( 1.988 x 10⁻²⁶ J) / (1.6 x 10⁻¹⁹)
E = 1.24 x 10⁻⁷ eV
Learn more about energy of photon here: brainly.com/question/15946945
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