My Answer: b)2
Scientific Notation: 3.0 × 10^-3
Answer:
resolve shear stress = 22 MPa
Explanation:
Given data
slip plane α = 43.1°
slip directions β = 47.9°
shear stress = 20.7 MPa (3,000 psi)
applied stress =45 mPa (6,500 psi)
to find out
what stress will be necessary
solution
we know that
resolve shear stress = aplied stress × cosα × cosβ
resolve shear stress = 45 × cos(43.1) × cos(47.9)
resolve shear stress = 22 MPa
we can say that here single cristal will be yield
because resolve shear stress is bigger than critical shear stress
Answer:
Explanation:
energy of photon having wavelength of 400 nm = 1237.5/400 eV
= 3.1 eV.
Maximum kinetic energy of photoelectrons = 1.1 eV .
Threshold energy Ф = 3.1 - 1.1 = 2 eV .
energy of photons having wavelength of 310 nm = 1237.5 / 310 eV = 4 eV .
Maximum kinetic energy of photoelectrons = energy of photons - Threshold energy
= 4 - 2 = 2 eV .
Required kinetic energy K₀= 2 eV.
Answer:
B. pinna . . . eardrum
Explanation:
Hearing is one unique feature of organisms performed by the EAR in humans and some other animals. The ear functions to transmit sound vibrations as impulses to the brain, which sends it back as sound. Specific part of the ear plays a pivotal role in bringing about the hearing process.
The external or visible part of the ear called PINNA channels or guide the sound waves coming from the external environment into the EARDRUM OR TYMPANIC MEMBRANE, which vibrates in response to the reception of the sound waves.
