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An ice-box is built of wood 1.75 cm thick, lined with cork 3 cm thick. If in the steady state the temperature of the inner surface of the cork is 0 ºC and that of the outer surface of wood is 12 ºC, what is the temperature of the wood-cork interface? The thermal conductivities of wood and cork are 0.2 W/m-K and 0.04 W/m-K respectively
2676The magnitude of electrostatic force between two identical positive ions that are separated by a distance of 5.0 x 10– 10 m is 3.7 x 10–9 N. (a) What is the charge of each ion? (b) How many electrons are “missing” from each ion?
2 13574A coil consisting of 200 turns of wire has its ends connected to a circuit such that the total resistance of the coil and the circuit is 2.0 ohm. There is no source of e.m.f. in the circuit. Each turn of the coil is a square of side 18 cm, and a uniform magnetic field directed perpendicular to the plane of the coil is turned on. If the field changes linearly from 0 to 0.5 T in 0.8 s, what is the magnitude of the current in the coil while the field is changing?
1 6620WHICH OF THE FOLLOWING PAIR IS INCORRECT? A) ROENTGEN: X-RAY B) NEWTON: LAW OF GRAVITATION C) FARADAY: DIFFUSION OF GASES D) PASTEUR: BACTERIOLOGY
4 14044NUMISMATICS IS THE STUDY OF A) COINS B) NUMBERS C) STAMPS D) SPACE
Coins, Dabur, ITBPF Indo Tibetan Border Police Force, Muskan,
9 24079which electronic devices used at low frequencies? and high frequencies?and microwave frequencies?
2043Post New General Physics Questions
What evidence is there supporting the big bang theory?
Explain diffraction?
Can a vector have a component equal to zero and still have a nonzero magnitude?
Explain the difference between the atomic theory and the kinetic theory?
Explain the difference between collector & emitter of transistor, even though material used for both same?
I just want to convert the voltage into current i.e. suppose I have 750V & 1A AC power then I want to convert it into 12V & 62A DC power only difficulty is that I don't want to use the tranceformer. Simply to say, I want to make the step-down without using tranceformer. Please, give me some ideas. And also I want the relation between Magnetic Induction & Weight of the body can be levitated. Or I can say, how much of magnetic induction requires to lift 500gms weight? I am heartily thankful to you.
What is meant by refraction of a wave?
Explain how many femtometers are in a nanometer?
How does the arrangement of atoms in most solids differ from the arrangement of atoms in a liquid?
Explain what is an electron?
According to the standard model of particle physics, what is the name for the three leptons that have no electric charge and little if any mass?
Explain the balanced field takeoff?
Shall i get Section engineer S & T question paper? (Railway recruitment board)
Explain what is the opaque?
What is the rectilinear propagation of light?
