1.1 The work function of barium and tungsten are 2.5' eV and 4.2 eV, respectively. Check whether these materials are useful in a photocell, which is to be used to detect visible light.
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Q: Example -2- what height of water will be produced the same pressure as 120 mmHg?
A: We know that:-Pressure=ρghHeight of mercury=120 mm=120×10-3 mρwater=1000 kg/m3ρmercury= 13600 kg/m3…
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A: To find : Magnetic field inside the solenoid
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A: Note: You have posted a question where three subparts are not related to each other . They are…
Q: A closely wound, circular coil with radius 2.20 cm has 780 turns. Part A What must the current in…
A: Given data:A circular coil is havingr=2.20 cmN=780 trunsMagnetic field at center is B=5.30×10-2 T
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Q: A 10-H inductor carries a current of 20 A. Describe how a 50-V emf can be induced across it.
A: Given that, M=10 H I=20 A ε=50 V Here we need to find the…
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A: Given that:Ditance between two wires, d=2.7 cmForce per unit length, FL=4.00×10-5 N/mCurrent in one…
Q: 4. Given R = 1.00 mm and I = 5.00 mm, what is the number of turns N such that the inductance of the…
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Q: 2). How much calories do you need to push an object in a frictionless surface to a distance of 60 cm…
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Q: Ex. 61: The latent heat of vaporization of water is 540 cal/gm. Calculate the internal and external…
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Q: A current of 4.50 A flows in a conductor for 7.50 s. How many electrons pass a given point in the…
A: Given that:-Current, I=4.50 ATime, t=7.50 secWe know that:-The current is rate of flow of charge,…
Q: 1). what is the speed of a 14 kN body at rest then falling from a height of 238 m.
A: Given that:-u=0g=9.8 m/s2Falling from Height, S=238 mForce, F=14kN=14×103 N
Q: A closely wound, circular coil with radius 2.20 cm has 780 turns. Part A What must the current in…
A: Given data:A circular coil is havingr=2.20 cmN=780 trunsMagnetic field at center is B=5.30×10-2 T
Q: What is the intensity of an electromagnetic wave with a peak electric field strength of 125 Vim?
A: Given that:- The Peak electric field strength is 125 V/m. We can say that, the intensity of an…
Q: What is the internal resistance of an automobile battery that has an emf of 12.0 V and a terminal…
A: We know that:- Output voltage, V where, V=emf- Ir ..... eqtn 1Here,V=15 Voltemf=12…
Q: 40000 kg truck moving right at 20 m/s collides with and sticks to a 4000 kg car moving right at 5…
A: Given that:-Mass of truck, m1=40000 kgMass of car, m2=4000 kgVelocity, v1=20 m/cVelocity of car,…
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Q: calculate critical frequency of glass panel of 5mm thickness and aluminium of 0.5mm thickness
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Q: Ex. 31: Calculate the average molecular kinetic energy: (a) per kilomole, (b) per kilogram, of…
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Q: radiation of wavelength 500 nm is incident on a silver surface.
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Q: Ex. 24: Assuming the expression for the pressure exerted by the gas, prove that the K.E. 3 unit…
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Q: A rectangular shaped core is made of mild steel (relative permeability of 940) plates 15 mm x 20 mm…
A: Given, Relative permeability is μr=940 The cross-section area of the plate is A=15mm× 20mm=3×10-4m2…
Q: electric flux
A: From Gauss law we know that Electric flux through a closed surface is φ=qencε0 where qenc is the…
Q: 1.) Normal Modes a.) A guitar string fixed at both ends has a length of 63.5 cm and a mass of 1.41…
A: a. Given,L=63.5 cm=0.635 mm=1.41 g=1.41×10-3kgT=205 NStrings are fixed at both ends.For second…
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Q: A 10-H inductor carries a current of 20 A. How much ice at 0°C could be melted by the energy stored…
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Q: 1. A very long conducting tube (hollow cylinder) has inner radius a and outer radius b. It carries…
A: Solution1: a). Calculation of electric field at r<a. i). Let us draw a cylindrical Gaussian…
Q: Question 2 The following are four magnetostatics laws in their mathematical form. For each one of…
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Q: XEx. 27: Find the density of nitrogen at N.T.P. (Given: M.W. of nitrogen = 28) P= 1.013 x 105 /m² R…
A: We have T=273 KM=28P=1.013×105 N/m2R=8.314 J/mole KR=8.314 ×103 J/K mole Kρ=?
Q: Suppose the earth was a perfect black body, so it absorbed all the energy from the sun and radiated…
A: The problem is based on the concept of the black body. A black body is a hypothetical perfect…
Q: What power is dissipated in a circuit through which 0.12 A flows across a potential drop of 3.0 V?…
A: Given that,Voltage : V = 3 V Current : I = 0.12 ANow,The power dissipated in a circuit : P = VIHere,…
Q: A ball is thrown vertically from the ground and 3 ft away from one side of the building at a rate of…
A: Given, v=52.1 ft/sd=3 ft
Q: 5. Obtain the the expression for the density of states for a system of free electrons in a…
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Q: Q18: A circular loop of area 10 cm darrying 8 A is placed in a uniform magnetic field parallel to…
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Q: The frequency of vibration of an air column in a pipe closed at one end is n, and that of another…
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Q: A glass box has an area of 0.95 m² and a thickness of 0.010 meters. The box inside is at a…
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