Ex. 8: Calculate the energy of the electron in the first orbit in a hydrogen atom. Express the answer in electron volt.
Q: The photoelectric work function of tungsten is 4.5 eV. Calculate its threshold wavelength.
A: To find-Threshold wavelength (λ0)=?Given-W0=4.5 eV=4.5×1.6×10-19 J
Q: Instructions: Show the complete calculation in G.R.E.S.A. in a piece of paper (Given, Required to…
A: Keppler's Third law Keppler's third law states that, the square of the orbital period(a) of the…
Q: b) Two cells, Alpha and Beta, are located side-by-side as shown in Figure 1. Two distinguishable…
A:
Q: Consider a person climbing and descending stairs. Construct a problem in which you calculate the…
A: Given A problem in which you determine the long-term rate at which stairs can be climbed considering…
Q: The PV diagram below represents 3.28 mol of an ideal monatomic gas. The gas is initially at point A.…
A: Solution:-Given thatnumber of moles (n)=3.28 molideal monatomic gas
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: Q6: Determine Hat P(0.4,0.3,0) in the field of 8A filamentary current which is directed from…
A:
Q: If the Sun were magically to turn into a black hole of the same mass, (a) Earth would start to…
A: A black hole is formed when a massive star with a mass 10 times that of the Sun dies. The…
Q: Calculate the energy of a photon in O wavelength 5000 A.
A:
Q: Ex/14: Radius of gyration of a ring about a transverse axis passing through its centre is...
A: To find-Radius of gyrationGiven-The transverse axis passes through its centre
Q: At what temperature will a black body radiate heat at the rate of 10 kW / m²? (Stefan's constant o =…
A: To find-Temperature of black body (T)=?Given-Rate of radiation of heat dQdt=10 kW/m2σ=5.67×10-8 S.I.…
Q: In an experiment to measure the charge on electron, the electrons travelling at a speed of 1.825 x…
A: To find-Magnetic induction (B)=?Given-Speed of electrons (v)=1.825×107 m/sElectric field (E)=3.2×104…
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: (a) Compute the binding energy for material X where effective masses of an electron and of a hole…
A:
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
Q: A conductor of length 10 cm is moved parallel to itself with a speed of 10 m/s, at right angles to a…
A: To find-Induced emf (e)=?Given-l=10 cm=0.1 mV=10 m/sB=10-4 Wb/m2
Q: In a velocity selector, the intensity of electric field is 2 x 104 V/m and the strength of magnetic…
A:
Q: A homogenous rod XY of length (L) and mass ('M') is pivoted at the center 'C' such that it can…
A: To find-Angular speed of rod (ω)=?Given-Length of rod=LMass of rod=MMass of blob=MSpeed of…
Q: 6. Calculate the displacement and velocity at times of (a) 0.500, (b) 1.00, (c) 1.50, and (d) 2.00 s…
A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…
Q: The proton-proton chain releases energy because mass is cre- ated in the process. (T/F)
A: Fusion is the process by which two light nuclei will combine to form a heavy nucleus.…
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: A thermal nuclear reactor is in steady-state operation with no external neutron sources, in which…
A: The expression for final reactor power is P=P0etτ…
Q: Nuclear fusion in the core of a massive star cannot create ele- ments much heavier than iron. (T/F)
A: Stars are powered by a nuclear process called fusion. In fusion, lighter elements will combine to…
Q: U04
A: We have-Temperature, T= 200°C=473 KWe know that-Internal Energy, Einternal=∑iKi¯+Ui¯where, Ki¯ is…
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: (b) A grindstone in the shape of a solid disk with diameter 0.520 m and a mass of 50.0 kg is…
A: Given that-d=0.520 mm=50 kgω0= 850 rev/minF=160 NInitial Angular velocity, ω0= 850…
Q: COSO - a♣ + (1 + sind) az)e-² in V/m. Determine how much flux, in pC, is passing through the…
A:
Q: The position of a particle in millimeters is given by s = 55 - 16t + t2 where t is in seconds. Plot…
A: Given that The position of a particle at any time t is s=55-16t+t2 Where s is in mm and t is in…
Q: 3. Figure 2.2 is a photograph of an eyeball with the image of a boy in a doorway. Is the eye here…
A: 1) Solution: Here the eye acts as a mirror because the aqueous fluid in the layer of the eye acts…
Q: Ex. 51: Calculate the energy of a photon in light of wavelength 5000 A.
A: To find-Energy of photon (E)=?Given-λ=5000 A0=5×10-7 mc=3×108 m/sh=6.63×10-34 Js
Q: Calculate the velocity of the electron in the first orbit in a hydrogen atom.
A: To find-Velocity of electron in 1st orbit (V1)=?Given-n=1∈0=8.85×10-12 C2/Nm2h=6.63×10-34…
Q: Ex. 55: Photoelectric threshold wave-length of à certain metal is 3315 A.U. Then its work function…
A: The work function is-W0=hv0=hcλ0W0=6.63×10-34×3×1083315×10-10W0=2×3×10-19W0=6×10-19 J
Q: An A.C. voltage of 230 V, 50 Hz is applied across a series combination of two Henry inductance and a…
A: Source voltage Vo = 230 V Source frequency f = 50 Hz Inductance L = 2 H
Q: The first figure gives spring force F, versus position x for the spring-block arrangement of the…
A: Given,Fs=200Nspring constant k=slope of the linek=200N0.02 m=10000 N/m
Q: Q. 24: A rectangular coil of 20 turns and area of cross section 25 cm² has a resistance of 1000. If…
A: Given-n=20A=25 cm2R=100 ohmdBdt=1000 T/sec
Q: All of the single red-dwarf stars that ever formed are still on the main sequence today. (T/F)
A: Main sequence stars are those which are fusing hydrogen to helium in their cores. Almost 90% of the…
Q: If you could redesign your society, what would you change
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Q: The capacitor of 50 µF is connected across 100 V, 50 Hz supply. Calculate 541 (1) reactance, (2)…
A: To find-(1) Reactance (2) Current Given-Capacity os capacitor (C)=50 μFVoltage applied (E)=100…
Q: Two uniform circular disc A and B of radii R and 4R with thickness X and X/4 respectively, rotates…
A: To find-Relation between IA and IBGiven-IA=M.I. of circular disc whose radii is RIB=M.I. of circular…
Q: Ex 41: Photoelectric work function of a photosensitive material is 4.8×10-19. Calculate the…
A: To find-Threshold wavelength (λ0)=?Given-W=4.8×10-19 Jh=6.63×10-34 Jsc=3×108 m/s
Q: Calculate the average density of a red giant core of mass 0.25 solar masses and radius 15,000 km
A: A red giant is a dying star in the final stages of its evolution. Once fusion stops in a star…
Q: A tungsten light bulb filament may operate at 2900 K. What is its Fahrenheit temperature? What is…
A:
Q: The car is traveling at a speed of 64 mi/hr as it approaches point A. Beginning at A, the car…
A: Solution: Given that, VA=64 mi/hr=93.866 ft/sacceleration(a): A to B=-6.2 ft/s2…
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=?
Q: = Ball 1 (m = 65g) is rolling at 4.5 m/s [N35°W] on a frictionless surface when it collides with…
A: Given: The mass of ball 1 is 65 g. The velocity of ball 1 is 4.5 m/s, N 35°W.…
Q: A tungsten light bulb filament may operate at 2900 K. What is its Fahrenheit temperature? What is…
A:
Q: Aluminum metal has a threshold frequency corresponding to wavelength 4770 A. Calculate the…
A: To find-Work function in eV (W)=?Given-λ0=4770 A0=4.77×10-7 mh=6.63×10-34 J-s
Q: Calculate the energy of the 21 cm line.
A: 21 cm line is the wavelength of the hydrogen that is observed in our galaxy. The relation…
Q: The graph of a sinusoidal function intersects its midline at (0, 1) and then has a maximum point at…
A: Given Sinusoidal function intersects point = (0, 1) Maximum point =…
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…
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