en light of 650nm wavelength fell on copper metallic surface there was no reading on the ammeter. After that when he changed aluminum with copper. Suddenly he started see reading on the ammeter. Explain this phenomena?

Q: A 500-MW(e) coal plant burns 2x10 kg coal in one year when operated at a CF of 0.55. Heat value of t...

A: Given that:-Mass of coal burned in 1 year, m=2×109 kgCF=0.55Heat value=2500 KCalKgin kJ=2500×4.2=10,...

Q: State Dulong and Petit's law and show how Einstein's model explains the departure from the law at lo...

A:

Q: 15. a. Determine the thermal voltage for a diode at a temperature of 20°C. b. For the same diode of ...

A: "Since you have asked Multiple Questions, we will solve the First Question for you as per Bartleby G...

Q: A rock is thrown straight down from a cliff at a velocity of 3.7 m/s and hits the ground pelow osend...

A: Given: The initial velocity of the rock is 3.7 m/s.            The time taken by the ball to hit the...

Q: The force F on a body of mass m moving in a circle of radius r is given by mv? F A Computer Science ...

A:

Q: 4. Compute the angular diameter of Betelgeuse as seen from the Earth. Given that My= -5.5 mag, mv= 0...

A:

Q: [3]. A light ray fall on a semi-sphere whose refractive index is n= 1.48 and radius is R = 16 cm as ...

A: Ray optics is a field of physics that considers light to be a bunch of rays going in a straight line...

Q: 4. An alternating voltage of 240V,50HZ is connected across an impedance of (60-j100) 2. Determine: i...

A: Given that:-Voltage, V=240 VoltFrequency, f=50HzImpedance, Z=60-j100ΩWe know that,Standard impedance...

Q: emperature in re Coefficient o 0.007 and resis

A: Given as, Ro =100Ω at 0o C,R100 =139.1Ω at 100o C,α=0.007,RT =121.3Ω .

Q: A 52.0 kg sled is pulled from rest by a snowmobile and accelerates at 2.0 "/s2 [forward] for 5.5 s. ...

A: Given, mass of sled= 52 kgacceleration= 2 m/s2 (forward)t= 5.5 sForce of friction= 118 N(backward)To...

Q: 8. Consider a qubit to be in the state 0). (b) What is the state of the qubit after the spin project...

A:   Quantm Measurement In quantum mechanics  after measurement we will get one of eigen values of the ...

Q: Om = arcsin(0.5). out

A: In Lambertian surface as, Pbdθo,φo,θi,φi=Lox,θo,φoLix,θi,φicosθidω In point P, the irradiance as, dφ...

Q: call object is 20.0 cm al mirror. The mirror n the mirror. If the in

A: Given; h0 =3.2mmd0 =20.0cmdi =60.0cm

Q: ms in thermal con systems of noninte

A: Given values , NA =4, NB =16 and EA =-2μB, EB =-2μB

Q: Derive eigen wavefunction and eigen values of a free electron whose motion is confined along x-axis ...

A:

Q: planar radic

A: An acquisition of 2-dimensional nuclear images which is similar to the plain films in the x-ray imag...

Q: The figure shows two tiny 5.0-g spheres suspended from two very thin 1.0-m-long threads. The spheres...

A: Given: L=1m, m=5×10-3kg, q=28×10-9C Refer to the free body diagram below : Here, T denotes the tens...

Q: Write the Sloke's theorem and Gauss divergence theorem of the vector lield How they are used to conv...

A:

Q: A 9.00-V potential difference is applied across a 12.0- F parallel- plate capacitor whose plates are...

A: Given: The potential difference applied across the parallel plate capacitor is V = 9 V The capacitan...

Q: (ii) In a Hall effect experiment on silver, a potential of 59 µV is developed thickness 0.05 mm when...

A: Due go Hall effect, a voltage difference is produces across the ends of a metal conductor when passe...

Q: d. Determine a symbolic expression for the acceleration of m2. Show that your result has units of ac...

A: As per the question, only d and e subpart will be solved. This is a problem based on Atwood's machin...

Q: Q. 7: Reactance of capacitor of capacitance C AC frequency 400/n Hz is 25 2. The value of C is (СЕТ-...

A: Given: Reactance of Capacitor,XC=25ΩFrequency,f=400πHz Two conductors are separated by an insulator,...

Q: B. Problem Set. Show complete solution 1. What work is done by a man who pushes a box along the floo...

A: 1. What work is done by a man who pushes a box along the floor with a force of 30 N over adistance o...

Q: 6sin2x Q1. state (a) the amplitude and (b) the period for: y = 3.

A: According to Bartelby guidelines only one solution is allowed in post .So answer of first question i...

Q: eriod of oscillation

A: The period of time of spring -mass system is T =2π/w W= √k/m ​​

Q: a) prove gauss theorem in spherical coordinates system

A: you have asked two independent questions and company policy directs me to answer only one.

Q: For the constant pressure expansion in Example 3.1, assuming that the gas behaves ideally, calculate...

A: Given: Pressure,P=2atm=202650PaInitial Volume,Vi=0.5L=0.5×10-3m3Final Volume,Vf=2L=2×10-3m3Universal...

Q: (i) An uniform copper wire has a resistivity of 1.54 x 10* ohm-meter at room temperature. For an ele...

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question s...

Q: A Lambertian source of radiance 10 W /m? sr is made in the shape of a ring. What is the irradiance a...

A: For a Lambertian surface the outgoing radiance will be proportional to the incoming radiance and is ...

Q: A particle moves outward along a spiral. Its trajectory is given by r = A0, where A is a constant. A...

A: Given, trajectory is r=Aθ where A=1πm/radθ=αt22 So, the trajectory will be r=1πm/rad×αt22=αt22πm/rad...

Q: A cavity radiator has its maximum spectral radiance at a wavelength of 2,5×10-7 m. If the body is he...

A: Given Data:-λmax=2.5×10-7mTemperature ratio, TTo=5.5Wien's constnt, b= 2.897×10-3m.k

Q: : what is the speed does a meter stick move if its length is observed to shrink to 0.5 m?

A:

Q: A Lambertian source of radiance 10 W /m² sr is made in the shape of a ring. What is the irradiance a...

A: Lambertian sources are nothing but light sources that follow Lambert's law. lambert law states that ...

Q: A car generator turns at 390 rpm when the engine is idling. Its 296-turn, 5.04 cm by 7.99 cm rectang...

A: Given that:-Number of turns, N=296Speed of motor is 390rpm.Peak EMF,ε=24.4 VoltWe know that:-ε=NBAωh...

Q: Pind The maximumdistansealartical Cantravet to Stolif You Know. The Particul The mass(20m/and thad s...

A: Given: Mass of particle, m=20 gm  Velocity, v=20 cm/s Force, Fv=-10v-32 To find: Maximum distance tr...

Q: A vector function is given in spherical coordinates as D = âg1.9 sin 6 Evaluate the integral over th...

A:

Q: We have a reflective grating with period 1400 nm and we are using it to study the spectrum of a mult...

A: Ray optics is a field of physics that assumes light to be a group of rays traveling through space in...

Q: (ii). Calculate the de Broglie wavelengths of the following objects and discuss the relevance of qua...

A: Given: A neutron Mass of neutron, Velocity of neutron, To find: De broglie wavelength of the neutr...

Q: Solve the following differential equation in series dy (1 + 4y = 0 dx? dx

A: Question from Mathematical physics. Series solutions of second order differential equation. Please h...

Q: Calculate the number of e-h pair generated for 50 incident photons in a photodiode whose responsivit...

A: Given,number of photon incident np=50wavelength λ=650nmresponsivity Rλ=IpP=0.315A/W

Q: Two small, identical conducting spheres repel each other with a force of 0.6N when they are 0.24m ap...

A: Given, F=0.6 Nr=0.24 mF'=0.9 N

Q: A very long straight wire carries a current of 10 A. Meanwhile, a 10-cm × 30-cm rectangular loop car...

A: Given: The long straight wire carries a current is I1 = 10 A The current carried by the loop is I2 =...

Q: EXERCISE 6: We have a gas whose initial temperature is 328 K, its final volume is 3.75 l, and its ra...

A: Concept: According to Charles Law V1T1=V2T2=kHere,V1=Initial VolumeT1= Initial TemperatureV2=Final V...

Q: Date: /20 Frem Using shell models sketch eneszy level dizraim of 35AX chd 4asc. Find all hotseble sp...

A:  For A1835r,Number of proton p=18number of neutron n=35-18=17 (odd -even nuclei)Order of filling of ...

Q: of usauelength. Tuo Bound wwaver 87 cm ļ 88.5 cm resp. prodluce lo beate/sec Find nelocity of sound!

A: To find- Velocity of sound=? Given- λ1=87 cm,λ2=88.5 cmn1-n2=10As,λ2>λ1, n1>n2Therefore-n1-n2=...

Q: 2) A diatomic molecule which consists of two atoms can have translational, rotational, and vibration...

A: Given: The diatomic H2 gas having translational, rotational and vibrational motion.

Q: 7. Which of the following is a measure of mass  a. pound   b. Newton   c. kilogram   d. all of t...

A: A physical body's mass is the amount of matter it contains. It's also a measure of inertia, or the r...

Q: 3. The spectral emissivity function of an opaque surface at 7(K) is approximated as (2E1 Osa<4 um 38...

A: Given: The temperature is 1000 K.            The spectral emissivity function is            ελ=2ε1  ...

Q: A charge q = -3Q rests inside a pyramid as shown in the figure below. The pyramid has a lateral base...

A: Given: Charge, q=-3Q  Base of pyramid, base=a units Height of pyramid, h=b units To find: Total elec...

Q: A bottle of saline solution (with a density of 1020 kg/m^3) is attached to a 1.2 m long piece of tub...

A: Given, ρ= 1020 kg/m3d= 1.2 minner diameter = 1 cm= 0.01 m