High-mass stars start off with much more fuel than low-mass stars. Why don't high-mass stars live longer?
Q: A flywheel of mass 2 kg has radius of gyration 0.2 m. Calculate the kinetic energy of rotation when…
A: To find-K.E. of rotation=?Given data-M=2 kgK=0.2 mn=5 r.p.s.ω=2πn=2π×5=10π rad/s2
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Q: 12
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Q: Ex. 58: The threshold wavelength for a certain metal is 5000 ACalculate the maximum K.E. of the…
A: Given-λ0=5000 A0=5×10-7 mλ=2500 A0=2.5×10-7 mTo find-(K.E.)max=?
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A: Given that-Diameter of string, D= 4mmOriginal length of string, L= 2mForce applied on string, F= 200…
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Q: A 557-N force is applied to stretch a cable, 66-m long and has a cross-sectional area of 2.8 mm^2.…
A: Given,Force F=557 NLength L=66mcross sectional area A=2.8 mm2Young's modulus Y=1.0×1011 N/m2
Q: Two sphere made of same material have radii in the ratio 2: 1. If both the spheres are at same…
A: To find-Ratio of heat radiated=?Given-Ratio of radii r1r2=21Temperature of both bodies is same,Ratio…
Q: Q. 52: A heat engine converts 1/6th of input heat into work. When temperature of sink is reduced by…
A: Temperature of source (T1)=?Given-dW=external work donedQ=heat supplied to system
Q: What is the physical principle that makes the frequency constant when light travels from one medium…
A: Let E be the energy of the light beam and ν be its frequency. "h" is the planck's constant.
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A: Given The figure below shows a slotted ring (radius r, slot width is negligible), which is loaded by…
Q: A 4.00 - μF capacitor and a 6.00 - μF capacitor are connected in parallel across a 600-V supply…
A: Given that-Capacitance, C1= 4.00 μF=4.00×10-6 FCapacitance, C2=6.00 μF=6.00×10-6 FVoltage applied,…
Q: 3. Explain the Bloch theory (do not need to be proved), then obtain the eigenvalue equation for the…
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Q: You purchase a rectangular piece of metal that has dimensions 4.6 mm x 17.0 mm x 33.5 mm and mass…
A: Solution:-Given thatmass of metal (m)=10-2 kgdimensions=4.6 mm×17 mm×33.5 mm
Q: A plano-convex lens with the radius of curvature R=-100mm is used to focus white light on a flat…
A: Given: The radius of curvature of plano convex lens is 100 mm. The refractive index of…
Q: Ex. 57: The threshold wavelength for photonmission from silver is 3800 Å. Calculate the maximum…
A: Given-λ0=3800 A0=3.8×10-7 mλ=2600 A0=2.6×10-7 mc=3×108 m/sh=6.63×10-34 Js1 eV=1.6×10-19 J
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A: Heisenberg uncertainity principle was a milestone towards development of quantum mechanics. It…
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Q: What is the product of the algebraic sum of kinetic energy and potential energy?
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Q: A 10.0 kg stone slides down a snow-covered hill (the figure (Figure 1)), leaving point A with a…
A: mass of the stone, m=10 kg initial velocity of the stone, u=11.0 m/s Height of point A, h=20m spring…
Q: Consider a frictionless track as shown in the figure below. A block of mass m₁ = 5.30 kg is released…
A: The block of mass 5.3 kg is released from rest from the top of the track, at a height of 5 m from…
Q: Find the potential difference across each capacitor of a 12 µF capacitor and a 30 μF capacitor that…
A: Given that-The capacitance across the first capacitor, C1=12μF=12×10-6 FThe capacitance across the…
Q: Crank AB rotates with a constant angular velocity of 5 rad/s. (Figure 1) Figure 5 rad/s 600 mm 0 B…
A: Given,ωAB=5 rad/sθ=23°
Q: B) Calculate the reflection coefficient of the cavity reflectors for semiconductor laser with 500μm…
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Q: The cable AB carries a tension of 520 N. Determine the moment about O (positive if counterclockwise,…
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Q: Resolve the 500 N into: y 209 30⁰ 30° 500 N X X' 1 x and y components 2 x and y' components 3 x' and…
A: To resolve the given component we know that component vector "a" along with "b" is written as…
Q: Give a summary representation on the different pictures of in quantum mechanics. In your answer, you…
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Q: Evaluate the differential cross section in the Born approximation for the potential V (r) = V₂r³e-ar…
A: The expression for the scattering amplitude is fθ=-2μh2q∫0∞V(r) e-qr rdr…
Q: the minimum value of RL to ensure that the Zener diode is in the "ON" state + 20 V IR Ο 0.18 ΚΩ Ο…
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Q: Complete solution For a flux of D = (x^2 + y^2)·¹/³ ax, find the following: a. the volume charge…
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Q: A thermal nuclear reactor is in steady-state operation with no external neutron sources, in which…
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Q: Ex. 4: The radius of 1" Bohr orbit of hydrogen atom is 0.53 A. Calculate of radius of 25th Bohr…
A: To find-Radius of 25th Bohr orbit (r25)=?Given-Radius of first Bohr orbit (r1)=0.53 A0=0.53×10-10 m…
Q: Q1/ Select the right answer for the following question? F 1) the kinematics of a particle happened…
A: This is true. The kinematics of the particle happened when velocity of a particle is equal to the…
Q: f(x) = cos(10(x - 1)), xo = 1, x = 2, n = 2. Find the error estimate for Taylor polynomial…
A: Solution: Let us calculate the nth derivative of the given function.…
Q: A resistance of 100 , an inductance of 10 Henry and a capacitor of 5 µF are connected in series and…
A: To find-(1) Reactance (X)(2) Impedance (Z)(3) Power factor (cosϕ)Given-R=100 ohmL=10 HC=5 μF=5×10-6…
Q: ■Assuming a spherical shape and a uniform density of 2000 kg/m³, calculate how small an icy moon of…
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Q: X-rays with a wavelength of 0.71° A scattered by a piece of carbon at a right angle, then analyzed…
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Q: Find the potential difference across each capacitor of a 12 µF capacitor and a 30 µF capacitor that…
A: Given that,The capacitance across the first capacitor : C1=12μF…
Q: How many turns must be wound on a flat, circular coil of radius 20 cm in order to produce a magnetic…
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Q: On what physical concept do fibers work?
A: Optical fiber: An optical fiber cable is a form of cable that can readily carry the specified data…
Q: A 557-N force is applied to stretch a cable, 66-m long and has a cross-sectional area of 2.8 mm^2.…
A: Given that-Force, F=557 NLength, L=66marea, A=2.8 mm2Y=1×1011 N/m2
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