When an electron beam is passed through electric field of 4500 V/m and magnetic field of 1.5 x 10-4 Wb/m² there is no deflection. What is the velocity of electrons ? .
Q: Compute the surface energy of the (111) plane of Copper with a face-centred cubic (FCC) structure…
A: The surface energy of the (111) plane of copper. Given, plane(111)lattice constanta=3.615 AoMolar…
Q: Ex. 2: Find the maximum kinetic energy of electrons injected from a certain material if materials…
A: To find-Maximum K.E.=?Given-Photoelectric work function (W0)=2.3 eV…
Q: What is the effect of detector material and mAs on Image Noise and Contrast of the acquired CT…
A: ANSWER: A computerized tomography (CT) scans images are taken from a series of x-rays penetrating…
Q: The temperature of the human body is 37 deg C. The intensity of radiation emitted by the human body…
A: A blackbody will emit radiation in all wavelengths. But at a given temperature the maximum value of…
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: The magnetic flux associated with the čoil changes from zero to 6 x 10 Wb in 10 sec. Calculate…
A: To find-Induced emf (e)=?Given-ϕ1=0 Wbϕ2=4×10-4 WbTime (t)=10 sec
Q: Because of stellar nucleosynthesis, the spectra of old stars show more heavy elements than those of…
A: Nucleosynthesis is the process by which new atomic nuclei are created from pre-existing nucleons.…
Q: B) Calculate the reflection coefficient of the cavity reflectors for semiconductor laser with 500μm…
A:
Q: PROBLEM Calculate the flow rate in correspondence of the exit of the system shown in the Figure,…
A:
Q: Find the focal length of a convex mirror whose radius of curvature is 32 cm.
A: focal length = Radius of curvature2
Q: What is the flux density at a distance of 20 cm from a point charge of 50 nC? 9.95 pC/sq.meter 1.12…
A:
Q: A 0.546-mol sample of an ideal diatomic gas at 375 kPa and 295 K expands quasi-statically until the…
A:
Q: What is hydrostatic equilibrium in stars.
A: The interstellar medium is mostly made of hydrogen. When the mass of the interstellar medium becomes…
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: Explain why massive stars evolve faster?
A: Stars are formed in the interstellar medium. The interstellar medium contains hydrogen and helium…
Q: The magnetic flux associated with a coil changes by 5 x 102 Wb in 25 seconds. Find the e.m.f.…
A: To find-Emf induced in a coil (e)=?Given-dϕ=5×10-2 Wbdt=25 sec
Q: Calculate threshold wavelength for given surface having threshold frequency 5 x 10¹4 Hz.
A: To find-Threshold wavelength (λ0)=?Given-ϑ0=5×1014 Hzc=3×108 m/s
Q: Two gliders collide on a frictionless air track that is aligned along the z axis. Glider A has an…
A: In elastic collisions, the momentum of the system before collision and after collision are same.…
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: 3. You are a person with incredible arm strength. You throw a ball of mass m = 2 kg horizontally…
A: Given a ball of mass m=2kg Is thrown up horizontally with an initial velocity v0 Let us assume…
Q: 2. You, a person with mass 75 kg, are on a the surface of recently discovered Planet Q. You…
A: a) Time period of the simple pendulum can be calculated as, T= 2π ImgL…
Q: ring of (a) Find the electric field on the z axis produced by an annular uniform surface charge…
A:
Q: The decay constant of radioactive per year. Calculate its substance is 4.33 × 10-4 half life period.
A: To find-Half life period (T)=?Given-Decay constant λ=4.33×10-4 per year
Q: The magnetic flux associated with the coil changes by 32 x 102 Wb in 20 seconds. Find the e.m.f.…
A: To find-Induced emf (e)=?Given-Magnetic flux (dϕ)=32×10-2 WbTime (dt)=20 sec
Q: been Cathode rays which have accelerated by a potential difference of 1000 volt enter in mutually…
A: To find-(1) em(2) Speed of electronsGiven-P.D.=1000 VE=20 V/cm=2×103 V/mB=10-4 Tesla
Q: The magnetic flux associated with the coil changes from zero to 6 x 10 Wb in 10 sec. Calculate…
A: To find-Induced emf (e)=?Given-ϕ1=0 Wbϕ2=4×10-4 WbTime (t)=10 sec
Q: Construct a triangle and classify it using the sides and angles. Use tick marks to indicate angles…
A: We have to construct the different types of triangles. On the basis of interior angle, triangles…
Q: State any five properties of radioactive element. Write down four main differences between…
A:
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: Calculate energy of the electron in the fifth Bohr orbit of H-atom.
A: To find-Energy of electron in 5th orbitGiven-n=5
Q: Describe the systematic approach to ECG interpretation?
A: Electrocardiogram (ECG) is used to monitor the heart rate of the patients. ECG mainly records the…
Q: When an electron is accelerated from rést to potential V, the final velocity of electron is (a) (c)…
A: To find-Velocity of electron=?Given-Electron is accelerated from rest to potentia (V)
Q: Ex. 22: : Determine the pressure of 4.032 gm of hydrogen occupying 16.8 litres of volume of 0°C
A: To find-Pressure of hydrogenGiven-M=4.032 gmV=16.8 litrest=00C4.032 gm of H2 occupy 16.8 litres of…
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: 1. What is the gravitational potential energy in a system of three objects with masses m₁ = 2.0 ×…
A: Given that, The masses are m1=2×1020kgm2=4×1020kgm3=1×1021kg=10×1020kg And their position vectors…
Q: Ex. 59: Find the capacitive reactance of 10 µF capacitor when it is a part of a circuit whose…
A: To find-Capacitance reactance (XC)=?Given-C=10 μF=10×10-6Ff=50 Hz
Q: Write equations for the alpha and gamma decay of the following isotopes: 235U; 251Cf. 98
A: Given : U92235 & C98251f We have to write the alpha and gamma decay equations for the given…
Q: (a) Compute the binding energy for material X where effective masses of an electron and of a hole…
A:
Q: Calculate the frequency of revolution of the electron in the first orbit of H-atom if the O radius…
A: To find-Frequency of revolution (f)=?given-λ=0.5 A0=0.5×10-10 mV=2.24×106 m/s
Q: Question 5) Laser diode has a 500μm cavity length with an effective absorption coefficient of 10cm¹,…
A:
Q: Calculate the radius of a spherical molecular cloud whose total mass equals the mass of the Sun.…
A: A molecular cloud is defined as an interstellar cloud made of gas and dust in which molecules like…
Q: In a velocity selector, the intensity of electric field is 2 x 104 V/m and the strength of magnetic…
A:
Q: The magnetic flux associated with the coil changes by 32 x 102 Wb in 20 seconds. Find the e.m.f.…
A: To find-Induced emf (e)=?Given-Magnetic flux (dϕ)=32×10-2 WbTime (dt)=20 sec
Q: What is the inductance of a series RL circuit in which R = 1.0 KQ if the current increases to one-…
A: Given that-R=1 kΩ=1000 ΩCurrent, I=I03Time, t=30μs=30×10-6 secIn case of RL Circuit…
Q: Ex. 51: Calculate the energy of a light of wavelength 5000 A. photon in
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: Radiation of wavelength 5 x 10-7 m is incident on the cathode of a photocell. The current in the…
A: Given-λ=5×10-7 mVs=3 Ve=1.6×0-19Ch=6.63×10-34 Jsc=3×108 m/s
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: If the frequency of radiation is doubled then the relation between initial K.E. and new K.E. is, (a)…
A: We need to compute here-New (K.E.)2=? We have been provided that-Initial frequency=vfinal…
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: 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…
Step by step
Solved in 2 steps