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Excited states do not in general live very long before they decay.Suppose a certain excited state lives just 10^-7 s. In that case weknow the time when the atom is in the excited state quiteaccurately--to within ?t=10^-7 s. That means there is a significantuncertainty ?E in the energy of the state.(a) (i got this part) estimate the size of this uncertainty.Answer: ?E=6.63x10^-23(b) Hence estimate the range ?f of frequencies that will bemeasured for the photons given off when the state decays.(c) A particular spectral line in hydrogen has wavelengthλ=121.5 nm and is observed to have a line width (in terms ofwavelength) of about 10^-7 λ. Estimate the lifetime of the corresponding excited state.
A rocket is fired at a speed of 82.0 m/s from ground level, at an angle of 31.0 ° above the horizontal. find By how much does the rocket clear the top of the wall
A famous mad-physicist Dr. Strangelove tries to find out how much energy is contained in one liter of sunlight. How much energy is contained in in one liter of sunlight
A double-slit experiment is set up using a helium- neon laser (lamda=633nm). How thick is the glass
The radius of the tires on your car is 0.33m. You drive 1400 m in a straight line. What is the angular displacement of a point on the outer rim of a tire, around the center of tire, during this trip? Suppose the tire rotates in the counter clockwise ..
the height of a cliff is 60m.you stand on it and throw a stone horizontally with a speed of 20m/s. how long does the stone strike the beach below the cliff
A simple pendulum has a length of 0.80 m and a bob of mass 0.20 kg. It is initially displaced to an angle of 18 degrees from the vertical, What angle does it make with the vertical
A real battery is not just an emf. We can model a real 1.5v battery as a 1.5v emf in series with a resistor known as the "internal resistance", What is the potential difference between the terminals of the battery
A woman with mass of 55 kg stands at the rim of a horizontal table having a moment of inertia of 410 kg m2 and a radius of 1.6 m. How much work does the woman do ON THE TABLE to set it into motion
A piece of Nichrome wire has a radius of 7.2 x 10-4 m. It is used in a laboratory to make a heater that dissipates 3.30×102 W of power, estimate the necessary length of wire
By doing a nuclear diffraction experiement, you measure the de Broglie wavelength of a proton to be 9.48 fm. evaluate the speed of the proton
The magnitude of the acceleration due to gravity
Each tire on a car has a radius of 0.330 m and is rotating with an angular speed of 15.5 revolutions/s. Find the linear speed v of the car
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