Why massive stars are short lived?
Q: Q7: Region I for which un= 3 is defined by X 0 has 2 = 5 Given H1 = 4a, + 3ay-6a, Alm. Find B1, H2 &…
A: Given:μr1 = 3 ,x < 0 this is region Iμr2 = 5, x > 0 this is region IIin region I, H→1 = 4 ax…
Q: Explain the hydrothermal method of nanoparticle synthesis methods.
A: In addition to ion implantation, pyrolysis, gas condensation, and chemical precipitation,…
Q: Electrons passes undeviated through crossed electric and magnetic fields. If E = 5 x 10¹ N/c and B =…
A: To find-Velocity of electron (v)=?Given-E=5×104 N/CB=4×10-4 Wb/m2
Q: Pressure OF The pressure exerted by a phonograph needle on a record is surprisingly large. If the…
A: Given,m=1.50 gr=0.170 mm
Q: In the laboratory frame, two observers A and B are moving along the sides of an equilateral triangle…
A: In this question two frames will be defined as S and S'. S frame having axes X and Y and S' frame…
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: Q4. Calculate the values of electron and hole concentrations in cm³ at 300 K for intrinsic Ge, Si…
A: Determine, The values of electron and hole concentrations at 300K
Q: Do it please
A: Given that-Length of the vertebra, L0=0.7 cm=0.007 mDiameter of the vertebra, d=4 cm=0.04mShear…
Q: Part of a single rectangular loop of wire with dimensions shown in the (Eigure 1) is situated inside…
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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=12×10-6 FThe capacitance across the…
Q: A large adult with mass 65.1 kg and a small child with mass 34.2 kg are on ice skates on a smooth…
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Q: A deflection bridge shown in figure below is used to measure an unknown Capacitance,Cu. The…
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Q: The most abundant element in the Sun is hydrogen. (T/F)
A: Sun is the star at the center of our solar system. It belongs to the G-type main-sequence stars.…
Q: a. Identify the number of states, inputs and outputs from the following state diagram b. Draw the…
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Q: Q1: Calculate the force necessary to accelerate a 900-kg rocket vertically down at the rate of 30…
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Q: The rotation of link AB creates an oscillating movement of gear F. (Figure 1) igure 100 mm att 8 100…
A: Since link AB and arm CD are rotating about the fixed points A and D Then vB and vC are always…
Q: A spherical steel ball bearing has a diameter of 2.540 cm at 23.00+C. (Assume the coefficient of…
A: Given that, The diameter of the steel ball is d=2.54cm=2.54×10-2m The initial temperature of the…
Q: The figure on the right shows a slotted ring (radius r, slot width is negligible), which is loaded…
A: Given The figure below shows a slotted ring (radius r, slot width is negligible), which is loaded by…
Q: located as shown in the below graph, where a = 0.02 [m] and b = 0.023 [m]. Consider the following…
A: The electric force of attraction or repulsion between two point charges separated by some distance…
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/m2We know that,Hook's law FA=Y×∆LL…
Q: : Calculate the de Broglie wavelength of Bullet moving with the speed 90 m/s and having a mass 5 gm.
A: To find-De Broglie wavelength (λ)=?Given-Speed bullet (V)=90 m/sMass of bullet (m)=5 gm=5×10-3 kg
Q: Calculate the peak wavelength emitted by Sun if it was a blackbody.
A: Sun is the star located at the center of our solar system and belongs to the main sequence stars.…
Q: The cable AB carries a tension of 520 N. Determine the moment about O (positive if counterclockwise,…
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Q: Ex. 13: Calculate the number of molecules in one liter of gas at N.T.P., if mass of each molecules…
A: To find-No. of molecules (n)=?Given-Volume of a gas=1 lit=VTemperature of gas T=273 KMass of each…
Q: The divergence of the vector potential A is, here. O is a constant with dimensions. 4 r Calculate…
A: Given that, The divergence of vector potential is ∇→·A→=-μo4πQr2 Where Q is the constant We have…
Q: A copper sphere has surface area 3.142 x 10² m² and its emissivity is 0.0187. Find the energy lost…
A: To find-Energy lost by sphere dQdt=?Given-A=3.142×10-2 m2e=0.0187σ=5.67×10-8 W/m2 0K4T=100+273=373…
Q: = Axial loads are applied with rigid bearing plates to the solid cylindrical rods shown in the…
A: Determine the minimum diameter required for each of the three rods. Given, Loads:P=35 kipsQ=25…
Q: 1- What is the difference between Atomic Energy levels and Crystal Energy Bonds? How Energy Band are…
A: The key difference between energy level and energy band is that energy levels exist at the atomic…
Q: Ex. 20: Find the value of energy of electron in eV in the third Bohr orbit of hydrogen atom.…
A: To find-E3=?Given-R=1.097×107 m-1h=6.63×10-34 Jsc=3×108 m/sn=3
Q: 1. What length of copper (p=1.78 x 10-80m) wire 1.2 mm in diameter is needed to make a 20-Q resistor…
A: Given that,Resistivity of copper : ρ = 1.78×10-8 (Ohm.m)Diameter : D = 1.2 (mm)Radius : r = D2 =…
Q: = At a temperature of 9°C, a 3-mm gap exists between two polymer bars and a rigid support, as shown…
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Q: 5.9 A composite spring has two steel springs connected in series. One of the springs has a mean coil…
A: a) It is given that the energy stored in both the springs are same, So, U1=U2 32 P12R13n1G54=32…
Q: (1) A siphon having a diameter d of 100 mm is positioned as shown in the picture. The flow losses…
A: Flow of fluid are of many types. Flow may be laminar, turbulent, etc. Continuity means the fluid…
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: Write the vector expression for the acceleration a of the mass center G of the simple pendulum in…
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Q: A star is observed at a distance of 90 pc. What will be its parallax angle?
A: Parallax is defined as the change in the apparent position of an object due to a change in the…
Q: You are working at a company that manufactures electrical wire. Gold is the most ductile of all…
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Q: One end of a regular ladder rests on the ground and the other end on a vertical wall. If the…
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Q: You and Booboo are riding bumper cars. You and your car have 335 kg of mass and a top speed of 5.3…
A: Given: The mass of your car is m1=335 kg. The mass of the Booboo's car is m2=180 kg. The max speed…
Q: Use the accompanying figure to write each vector listed as a linear combination of u and v. Vectors…
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Q: Two wires each carrying a steady current I are shown in four configurations in Column I. Some of the…
A: Required : Correct options.
Q: Calculate the difference between the acceleration due to Earth's gravity at Moon's center and the…
A: Acceleration due to gravity is the acceleration gained by an object due to gravitational force.…
Q: Use Stefan's law to calculate how much less energy is emitted per unit area of a 4500-K sunspot.
A: Sunspots are large dark regions formed on the Sun's photosphere. They are formed due to magnetic…
Q: Unpolarized light is incident on the polarizer in the figure below. The analyzer is set at angle of…
A: Solution: According to the Malus law, the intensity of light after passing through the polarizer is…
Q: A rod of some metal is measured to be .6 meters at room temperature (23 Celsius). It is then heated…
A: When heated, metals tend to expand in length, area and volume, depending on the internal…
Q: What would be your weight on Pluto
A: Gravity is an attractive force that acts on anything with a mass. Higher the mass higher the…
Q: Find the focal length of a convex mirror whose radius of curvature is 32 cm.
A: focal length = Radius of curvature2
Q: B) Calculate the reflection coefficient of the cavity reflectors for semiconductor laser with 500µm…
A: expression for gain threshold is given by g th is the threshold gain = 3000 / m α is the effective…
Q: Predict the time for Mars to orbit around the Sun if the orbital distance of Mars is 1.52 times of…
A: Given Data : Orbital distance of Mars is 1.52 times of Earth's orbital distance that is aM = 1.52ae…
Q: 12
A: Given that,Radius of the coil : r = 20 cmMagnetic field produced at the centre : B = 4.0 x 10-5…
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