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Solve the following questions:
Question I: What are the energy, momentum, and wavelength of a photon that is emitted by a hydrogen atom making a direct transition from an excited state with n=9 to the ground state?
Question II: What is the recoil speed of the hydrogen atom in this process?
I want help to find the recoil speed of the hydrogen atom in this process.
careful measurements of local variations in the acceleration due to gravity can reveal the locations of oil deposits.
Illustrate what is the uniform speed of a gondola when the Ferris wheel is running at full speed?
a bat strikes a 0.145- baseball. just before impact the ball is traveling horizontally to the right at a speed of 40.0
A 78 person sits on a 3.6 chair. Each leg of the chair makes contact with the floor in a circle that is 1.0 in diameter. Find the pressure exerted on the floor by each leg of the chair
A 11-g piece of Styrofoam carries a net charge of -0.85 ?C and floats above the center of a large, What is the charge per unit area on the plastic sheet
A 4.1-kg block slides down an inclined plane that makes an angle of 29° with the horizontal. Find the coefficient of kinetic friction between the block and plane
An old mining tunnel disappears into a hillside. You would like to know how long the tunnel is, but it's too dangerous to go inside. but, you gure out a way: using your subsonic applier and loudspeaker, you in resonances at 4.5 Hz and 6.3 Hz, and at ..
A football is kicked straight up into the air; it hits the ground 5.4 s later. What was the greatest height reached with the ball? Suppose it is kicked from ground level. With what speed did it leave the kicker's foot?
A vertical electric field of magnitude 2.45 x 104 N/C exists above the Earth's surface on a day when a thunderstorm is brewing. Determine the electric flux through the bottom of the car
A galvanometer has a coil resistance of Rgalv = 89.7 ?. It is to be made into an ammeter with a full-scale deflection equal to I = 2.35 A. If the galvanometer deflects full scale for a current of Igalv = 135 mA, what size shunt resistor should be use..
A 1.0mL syringe has an inner diameter of 6.0mm , a needle inner diameter of 0.29 mm , and a plunger pad diameter (where you place your finger) of 1.2 cm . A nurse uses the syringe to inject medicine into a patient whose blood pressure is 140/100mmHg...
A car of mass 1430 kg traveling at 28 m/s is at the foot of a hill that rises 105 m in 3 km. Find the average power delivered by the car's engine
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