An atom in an excited state of 4.7 eV emits a photon and ends up in the ground state. The lifetime of the excited state is 1.0 x 10-13 s. (a) What is the energy uncertainty of the emitted photon? (b) What is the spectral line width (in wavelength) of the photon?

Q: A particle begins to move on top of a hemispherical surface. Where will it leave the surface?

A:  

Q: The figure shows a car, of mass m = 1000 kg, traveling east with a speed v, = 24 km/h. At an interse...

A: In a collision, if no external forces act on the system then the total linear momentum of the system...

Q: Given MgSO4 x 7H20 What is the balanced chemical equation showing the evolution of water from your h...

A: Solution:   Given Chemical Equation is as follows:   MgSO4 x 7H20 which is called as Magnesium sulfa...

Q: A 3.00 kg box that is several hundred meters above theearth’s surface is suspended from the end of a...

A:

Q: Through what potential difference must electrons be accelerated if they are to have (a) the same wav...

A: (a) Wavelength is, λ=h2meV2meV=hλ2V=12mehλ2V=129.1×10-31 kg1.60×10-19 C6.626×10-34 Js0.220×10-9 m2V=...

Q: A proton and an antiproton annihilate, producing two photons. Find the energy, frequency, and wavele...

A: Given data: The initial kinetic energy of each of the particle is E∘=620 MeV. Part (a)  Apply the ...

Q: Mud particles are released from the edge of a wheel of radius b moving on the ground. If the forward...

A: Given: The radius of the wheel is b. The forward wheel speed is v0. Introduction: A projectile is an...

Q: The hydrogen iodide (HI) molecule has equilibrium separation 0.160 nm and vibrational frequency 6.93...

A: Given: The vibrational frequency is f=6.93×1013 Hz. The mass of the hydrogen atom is M=1.67×10-27 k...

Q: Determine the correct equation to describe the Kβ frequencies measured by Moseley. Compare that with...

A: The general equation for the K-series frequency according to Moseley’s modeling can be given as, He...

Q: Why does a 99mTc generator need to be shipped once a week to hospitals? (a) What is the activity of ...

A: Technetium-99m is produced from the synthetic substance molybdenum-99 which is a by product of nucle...

Q: When a car is hit from behind, its passengers undergo sudden forward acceleration, which can cause a...

A: Part (a) Given: The energy absorbed is E=8.0 J. The time taken for collision is t=10.0 ms. The mass...

Q: Monochromatic light is at normal incidence on a plane transmission grating. The first-order maximum ...

A: The expression for the diffraction grating is as follows: dsinθ=mλ                       1 Use equat...

Q: *PLEASE ANSWER QUESTIONS #7* Make a sketch of the trajectory of a ball after it has been thrown. Dr...

A: When the ball is thrown, its horizontal velocity is constant throughout the motion, but vertical vel...

Q: The simple pendulum was in a horizontal position at point p. We released it until it reached point Q...

A:

Q: A comet has a period of 98.5 years and moves in an elliptical orbit in which its perihelion (closest...

A: Given :       Period, P = 98.5 years         98.5 years ×365 days1 year ×24 hours1 day×60 min1 hour×...

Q: The overall angular magnification of a microscope is M = -178. The eyepiece has focal length 15.0 mm...

A: Angular magnification of a microscope is given as, Here, mo and me denotes the magnification of the...

Q: Suppose you have an observable N with three eigenvalues 4, 8, and -1, with orthonormal eigenvectors ...

A: Expectation value of the given observable Ω=<ψΩψ>=c1*<1+c2*<2+c3*<3Ωc11>+c22>+c...

Q: An electromagnetic wave with frequency 65.0 Hz travels in an insulating magnetic material that has d...

A: (a)Speed of propagation of the electromagnetic wave in a material medium,v=cμ0ε0                    ...

Q: A 75.0 kg wrecking ball hangs from a uniform, heavy-duty chainof mass 26.0 kg. What is the tension a...

A: Given, Mass of the ball , mb=75 kg Mass of the chain, mc=26 kg The given question can be predicted i...

Q: A 62.0 kg skier is moving at 6.50 m/s on a frictionless, horizontal, snow-covered plateau when she e...

A:

Q: Draw a labelled free body diagram to a book is at rest on tabletop.

A:

Q: Telescopes on certain commercial surveillance satellites can resolve objects on the surfaceEarth siz...

A: Given :     Altitude, L = 400 km = 400 x 103 m    Wavelength, λ = 550 nm = 550 x 10-9 m Let R be the...

Q: solve a , b , c parts

A: (a) The system is analgous to a simple pendulum.Here, the student can be considered to be equivalent...

Q: A mixture of ice and water, initially at 0◦C, poured into 50.0 g aluminum cup, initially at 30.0 ◦C....

A: Given: T1=0oC=0+273 T1=271K T2=30oC=30+273 T2=303K m=50.0g Atomic mass of aluminium is 27 g/mol So n...

Q: 1. a)Calculate the refractive power of the cornea when it is in contact with water. The index of ref...

A: a) The refractive power (P) of a curved transparent surface that has a radius of curvature (R) is gi...

Q: Fission reactions occur only for nuclei with large nucleon numbers, while exoergic fusion reactions ...

A: The ratio of the neutron and proton for stable nuclides or light nuclides is: NZ=1 Here, N represent...

Q: What’s the center of mass for each situation?

A:

Q: I am just looking for the solution of the theoritical part. I will take care of the portion that req...

A: The general equation of the pendulum can be derived by finding its Lagrangian. It is the easier way ...

Q: The capacitor in the figure below is initially uncharged. The switch S is closed at t = 0. (a) Expla...

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If y...

Q: If a muon is traveling at 0.999c, what are its momentum and kinetic energy? (The mass of such a muon...

A: The relativistic momentum of the particle is p=m0v1-v2c2 Use the given values, p=207mev1-v2c2p=(207)...

Q: The gravitational forces exerted by the Sun on the planets are always directed toward the Sun and de...

A: given, There are sun and a planet and placed at distance r

Q: Advanced Physics Question

A: Since the puck is initially at rest, the initial momentum is zero. From conservation of momentum Pf=...

Q: Helium is the lightest noble gas and the second most abun-dant element (after hydrogen) in the unive...

A: (a)  The volume of the nucleus (Vn) is given as, Here, rn denotes the radius of the nucleus of the ...

Q: Fusion only occurs in the solar core. Assuming that 10% of the Sun’s total mass is available to part...

A: Mass of Sun is 2×1030 kg The luminosity of the Sun is 3.78×1026 Joules/second The current age of the...

Q: Select the direction of each external force acting on the highlighted object. Only include forces in...

A: weight will act downward normal force will act towards right (perpendicular to inner side of loop) T...

Q: A 12-pack of Omni-Cola (mass 4.30 kg) is initially at rest on a horizontal floor. It is then pushed ...

A: Part (a) Given: The mass of pack is m=4.30 kg. The distance covered by pack is d=1.20 m. The horizo...

Q: Four squares with edges of length L=1m are made of different material and laid flat on the ground. T...

A:

Q: A 2.00 kg block is pushed against a spring with negligible massand force constant k = 400 N/m, compr...

A: Given: The mass of block is m=2.00 kg. The force constant of spring is k=400 N/m. The distance comp...

Q: A block of a transparent solid sits on top of the horizontal surface of a block of glass. A ray of l...

A: Given data: The incident angle is θ1=62.0∘. The wavelength of light in glass is λ1=447 nm. The wave...