A tungsten light bulb filament may operate at 2900 K. What is its Fahrenheit temperature? What is this on the Celsius scale?
Q: Cable AB passes over the small ideal pulley C without a change in its tension. What length of cable…
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Q: Ex 51: The temperature of interstellar space has an average value of about 5 K. Find the rms speed…
A: Given-T=5 Kmp=1.673×10-27 kgkB=1.38×10-23 J/K
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: 14. (II) Calculate the ratio of the resistance of 10.0 m of alu- minum wire 2.2 mm in diameter, to…
A: Given, The length of the aluminum wire L1=10m. The diameter of the aluminum wire D1=2.2 mm…
Q: More massive stars form more rapidly. (T/F)
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Q: A bridge rectifier uses four diodes, each diode conducts for half- the input frequency O true O…
A: Bridge rectifiers as a type of full-wave rectifier that uses four diodes in a bridge circuit…
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: What is the luminosity, in solar units, of a brown dwarf whose radius is 0.1 solar radii and whose…
A: Luminosity of a star or an object is the total amount of energy radiated per second by that object.…
Q: When an axial load is applied to the ends of the bar shown in the figure, the total elongation of…
A: Given Total elongation of the bar between joints A and C δtotal = 0.12 in Normal strain ε2…
Q: What is the current through the zener diode? Where Vin=20v Vz=10v. + VIN ā R ww 560 Ω
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Q: The copper rod 1.5 m long is rotated in a magnetic field of induction 6 × 105 Wb/m². If it performs…
A: To find-Induced emf (e)=?Given-Length of rod (l)=1.5 mMagnetic induction (B)=6×10-5 Wb/m2
Q: a) Determine the reactions at A and E if P = 520 N. The reactions are positive if to the right or…
A: (a) Take the sum of the forces in x-direction ∑Fx=0Ax+Ex-3110×sin31=0 Ax+Ex-1602=0…
Q: Find the change in magnetic flux bod associated with the coil in 25 sec. Given: Induced e.m.f. = 2 ×…
A: To find-Change in magnetic flux (dϕ)=?Given-Time (dt)=25 secInduced emf (e)=2×10-3 V
Q: Ex. 74 Calculate the energy radiated in one had of minute by a black body of surface area 400 cm²…
A: To find-Energy radiated (Q)=?Given-Time (t)=1 min=60 secSurface area (A)=400 cm2=400×10-4…
Q: A copper sphere has surface area 3.142 x 102 m² and its emissivity is 0.0187. Find the energy lost…
A: To find-Energy lost by sphere dQdt=?Given-A=3.142×10-2 m2e=0.0187σ=5.67×10-8 W/m2 0K4T=100+273=373…
Q: The filament of an evacuated light bult has length 10 cm, diameter 0.2 mm and emissivity 0.2,…
A: TO find-ower radiated=?Given-l=0.1 mm=10-1×10-3=10-4 md=0.2 mmr=0.1 mm=0.1×10-3 me=0.2T=20000…
Q: Which of the following lattice structure is the? reciprocal Lattice of FCC lattice FCC .a O BCC .b O…
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Q: You hear a seal produce an alarm call on the beach. Some of this alarm sound will also penetrate…
A: Given: The reflection coefficient is 0.5. To find: The percentage of sound energy that gets…
Q: (1) A siphon having a diameter d of 100 mm is positioned as shown in the picture. The flow losses…
A: Flow of fluid are of many types. Flow may be laminar, turbulent, etc. Continuity means the fluid…
Q: Briefly explain the inadequacies of classical physics and their remedies on the Black Body Radiation
A: BLACKBODY RADIATION :-Any object with a temperature above absolute zero emits light at all…
Q: State any five properties of radioactive element. Write down four main differences between…
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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: In a velocity selector, the intensity of electric field is 2 x 104 V/m and the strength of magnetic…
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Q: Ex. 9: The horizontal telegraph wire 100 m long, oriented along magnetic east west falls freely…
A: To find-Induced emf (e)=?Given-Length of wire (l)=100 mVelocity (V)=20 cm/s=20×10-2 m/s
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…
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 tungsten light bulb filament may operate at 2900 K. What is its Fahrenheit temperature? What is…
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Q: IV. Static Equilibrium Using the simulation "Balance Lab", create a condition of static equilibrium…
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Q: A spherical shell of radius R = 3 m has its center at the origin and carries a surface charge…
A: Determine, Electric field at point x=2m and 4m
Q: The office receives 110 customers per hour. All customers first see a receptionist. The receptionist…
A: Solution:- Reception = 73.3% Eye Test = 137.5% Written…
Q: urchase a rectangular piece of metal that has dimensions 4.6 mm 5 mm and mass 1.00x102 kg. 17.0 mm ▼…
A: To find density of gold and we're we cheated or not
Q: Ex. 57: The threshold wavelength for photonmission from silver is 3800 Å. Calculate the maximum…
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Q: Ex. 14: Radius of gyration of a ring about a transverse axis passing through its centre is...
A: We have to find the radius of gyration of a ring about a transverse axis passing through the center.…
Q: The peak wavelength of radiation emitted by a black body at a temperature of 2000 K is 1.45 μm. If…
A: A blackbody is an ideal object that is capable of absorbing radiations of all frequencies that fall…
Q: The magnetic field of a harmonic plane electromagnetic wave is given by the expression where all…
A: The diameter of the circular sheet is given as, d=1 mm The radiation reflected by the sheet is given…
Q: Ex. 16 The wheel with 10 metallic spokes each of 0.5 m long rotated with a speed of 120 r.p.m. in a…
A: To find-Induced emf (e)=?Given-(B)=3.5×105 wb/m2No. of revolutions per minute (n)=120r.p.s…
Q: m1 = 4.00 kg a = 33.1⁰ Ms = 0.40 MK = 0.20 A) What is the maximum mass m₂ so that it will not go…
A: In the given problem, the two masses are attached through a pulley, by the means of a rope. The mass…
Q: B) Calculate the reflection coefficient of the cavity reflectors for semiconductor laser with 500μm…
A: Given,L=500μmα=820/mgth=3000/m
Q: Q. 52: A heat engine converts 1/6th of input heat into work. When temperature of sink is reduced by…
A:
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: The radius of a uniform solid sphere is measured to be (6.50 ± 0.20) cm, and its mass is measured to…
A: Given that :Radius : r = (6.50±0.20) cm Mass : M = (1.85±0.02) kg Here we need to find the density…
Q: 1. Two objects, P and Q, have the same momentum. Q can have more kinetic energy than P if it has: A)…
A: The momentum of an object is given as p=mv m is the mass of the object v is its velocity Kinetic…
Q: Ex. 74 Calculate the energy radiated in one minute by a black body of surface area 400 cm² when it…
A: To find-Energy radiated (Q)=?Given-Time (t)=1 min=60 secSurface area (A)=400 cm2=400×10-4…
Q: Calculate the energy associated with a O photon of wavelength 4500 A .
A: To find-Energy (E)=?Given-Wavelength of photon (λ)=4500 A0
Q: An aluminum wire with a diameter of 0.090 mm has a uniform electric field of 0.270 V/m imposed along…
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Q: Electrical power is transmitted to our homes by overhead wires strung between poles. A typical…
A: Here we estimate the height of an electrical transmission line. For linear charge density, we use…
Q: What is the round-trip travel time of light from Earth to Pluto (at a distance of 40 AU)?
A: The time taken by an object to travel a given distance is given by, t=dv Here t is the time taken,…
Q: One end of a regular ladder rests on the ground and the other end on a vertical wall. If the…
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Q: 1. For a one-dimensional fermion gas, calculate the density of energy levels g(e).
A: The answer is explained below with a proper explanation.
Q: ecibels are used to measure the power of a sound. The formula is where is the intensity of sound in…
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