Ex. 53: A 25 W lamp conneted to A.C. potential of peak value 100 V. Calculate the r.m.s. value of the current.
Q: Ex. 9 The horizontal telegraph wire 100 m long, oriented along magnetic east west falls freely under…
A:
Q: Q32: U-shaped film of a liquid is formed between a wire frame and movable wire 5 cm long. Then the…
A: Given-l=5 cmT=0.024 N/mFinding-Force (F)=?
Q: P6
A: Given that-Capacitance, C=1.05μF=1.05×10-6 FV=41.0 VoltInductance, L=9.0mHCharge stored in the…
Q: The figure gives the acceleration of a 6.0 kg particle as an applied force moves it from rest along…
A: Given, Acceleration vs position graph
Q: What is the effect of the mass of a pendulum on its period? O The period is unaffected O The period…
A: Given that,Time period of a pendulum : T=2π×lg eqn 1In above formula, there is no mass(m) :…
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: What is the effect of the mass of a pendulum on its period? O The period is unaffected O The period…
A: Given that-Time period of a pendulum, T=2π×lg eqn 01In above formula, there is no mass(m) We…
Q: It takes less and less time to fuse heavier and heavier elements inside a high-mass star. (T/F)
A: Stars are powered by fusion reactions. It is the process by which lighter elements combine to form…
Q: A silver wire has a resistance of 3.00 at 25.0°C. Determine its resistance (in 22) at 425°C. The…
A: Given: The resistance of the silver wire at 25°C is 3.00 Ω. The temperature coefficient…
Q: if you measured the depth from the water surface down to the air-water interface inside the tube…
A: The value of pressure is not constant in the cylinder. It depends on various factors. Pressure…
Q: Photoelectric work function of a photo- sensitive material is 3 x 10-¹9 J. Calculate its threshold…
A: To find-Threshold wavelength (λ0)=?Given-W=3×10-19 J
Q: What should be the velocity of an electron so that it goes undeviated through a region of crossed…
A: To find-Velocity of electrons to go undeviatedGiven-Electric field=1500 V/mMagnetic field=0.40 Wb/m2…
Q: (a) A 34.1-m length of copper wire at 20.0°C has a radius of 0.31 mm. If a potential difference of…
A: Given, L=34.1mr=0.31mmV=7.00V
Q: Q01
A: We have-Temperature, T= 200°C=473 KWe know that-Internal Energy, Einternal=∑iKi¯+Ui¯where, Ki¯ is…
Q: A driver traveling north slows down from 35.4m / s to 0m/s in 8.6 seconds. What is the magnitude of…
A: Solution:-Given thatInitial speed (u)=35.4 m/sFinal speed (v)=0 m/stime (t)=8.6 s
Q: LO3 What is the favored explanation for the rapid spin rates of millisecond pulsars?
A: A pulsar is defined as a highly magnetized rotating neutron star that is capable of emitting…
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: A tungsten light bulb filament may operate at 2900 K. What is its Fahrenheit temperature? What is…
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Q: What is the luminosity of a star having three times the radius of the Sun and a surface temperature…
A: The luminosity of a star is a measure of the total amount of energy that is radiated by a star per…
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: = Ball 1 (m = 65g) is rolling at 4.5 m/s [N35°W] on a frictionless surface when it collides with…
A: Given: The mass of ball 1 is 65 g. The velocity of ball 1 is 4.5 m/s, N 35°W.…
Q: The best place to search for black holes is in a region of space that (a) is dark and empty; (b) has…
A: The black holes are the region of intense gravity and formed due to the collapsing of the entire…
Q: Calculate the luminosity of Sirius A in solar units.
A: Luminosity is the absolute measure of the radiated power or energy radiated per second of a star or…
Q: When an electron is accelerated from rést to potential V, the final velocity electron is of (a) (c)…
A: Work done in acclerating the electron, W= eV the increasing in Kinectic energy = 1/2 m v2 according…
Q: State any five properties of radioactive element. Write down four main differences between…
A: Disclaimer: “Since you have asked multiple question, we will solve the first question for you. If…
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: Calculate the energy released in H-alpha emission of hydrogen.
A: When an electron gets excited it will absorb energy in form of photons. This will take the electron…
Q: The co-efficient of reflection of an opaque body is 0.16. Its co-efficient of emission is - (a) (c)…
A: To find-Coefficient of emission (e)=?For an opaque body,t=0a=eAnd given r=0.16
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: 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: State-of-the-art vacuum equipment can attain pressures as 3.0 x 10-11 Pa. Suppose that a chamber…
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Q: B) Calculate the reflection coefficient of the cavity reflectors for semiconductor laser with 500μm…
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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: 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: Assume that a portion (p) of light passes through the glass and a portion of h is reflected back.…
A:
Q: w the affine plane, A many points are in ines? How many pa
A: a) Affline plane AG(2,3) can be drawn as,
Q: A circular coil of radius 5.0 cm is wound with five turns and carries a current of 5.0 A. If the…
A:
Q: High-mass stars start off with much more fuel than low-mass stars. Why don't high-mass stars live…
A: Required : Why don't high mass stars live longer.
Q: When an AC source is connected across a 10.0- resistor, the rms current in the resistor is 7.38 A.…
A: Given that-Resistance, R= 10.0ΩRMS current, Irms= 7.38AThe rms voltage, Vrms=Irms×R=7.38A×10.0Ω=73.8…
Q: An electron of velocity 2.652 × 107 m/s enters a uniform magnetic field of inductance 0.5 Wb/m²…
A: To find-Radius of path of electron(r)Given-Velocity (v)=2.652×107 m/sMagnetic induction (B)=0.5…
Q: Weights of 10 N, 23 N, and 30 N are placed on a meterstick at 24 cm, 40 cm, and 66 cm respectively.…
A:
Q: The capacitance of capacity 0.4 µF is connected to an alternating e.m.f. of 100 cycles. What is the…
A: To find-The capacitive reactance (XC)=?Given-Capacity of capacitor (C)=0.4 μF=0.4×10-6 FFrequency of…
Q: Ex. 57: The threshold wavelength for photonmission from silver is 3800 A. Calculate the maximum…
A: Given-λ0=3800 A0=3.8×10-7 mλ=2600 A0=2.6×10-7 mc=3×108 m/sh=6.63×10-34 Js1 eV=1.6×10-19 J
Q: Ex. 79: Calculate the quantity of heat emitted in 5 minutes by a black cube each of side 5 cm long…
A: To find-Heat emitted (Q)=?Given-Time (t)=5 min=5×60 sec=300 secLength of each side (l)=5 cm=5×10-2…
Q: In an amusement park ride, a 70 kg person sits in a 125 kg cage, which in turn is attached to the…
A: Solution: The bungee jumping system is shown in the figure given below. Let M be the combined mass…
Q: The Galactic halo contains as much gas and dust as the disk. (T/F)
A: A galactic halo is a region surrounding a galaxy. It extends beyond the visual part of the galaxy.…
Q: A straight conductor moves with uniform velocity of 10 m/s at right angles to the magnetic field of…
A: To find-Length of conductor (l)=?Given-V=10 m/sB=0.6×10-4 Wb/m2e=3×10-4 V
Q: Briefly describe the inadequacies of classical physics and their remedies on the following: Atomic…
A: Classical physics were found to be inconsistent with the different Formulation given by Maxwell's…
Q: P. 1) The working substance of Cannot cycle is air considered as a perfect gas. Maximum pressure in…
A: part(i) Minimum temperature in cycle. Part(ii) The change of entropy during the isothermal process.…
Q: The work function for the surface of aluminium is 4.2 eV. How much potential difference will be…
A: To find-Wavelength and potential differenceGiven-e=1.6×10-19 Cϕ0=4.2 eVλ=2000 A0
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