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(a) For a hydrogen atom making a transition from the n = 4 state to the n = 2 state, determine the wavelength of the photon created in the process.
____________ nm
(b) Assuming that the atom was initially at rest, determine the recoil speed of the hydrogen atom when it emits this photon.
____________ m/s
An object at rest explodes into three pieces of equal masses. One moves east at 23 m/s, while the second piece moves northwest at 14 m/s. Estimate the velocity of the third piece? Suppose each piece has a mass of 2 kg.
An electric vehicle starts from rest and accelerates at a rate of 1.6 m/s2 in a straight line until it reaches a speed of 20 m/s. The vehicle after that slows at a constant rate of 1.4 m/s2 until it stops. (1) How much time elapses from start to s..
First-order Bragg diffraction is observed at 23.0 degrees relative to the crystal surface, with spacing between atoms of 0.26nm, At what angle will second order be observed
On a pleasure cruise a boat is traveling relative to the water at a speed of 4.94 m/s due south. find the magnitude of the passenger's velocity relative to the water
Illustrates a FBD of the person
Two point charges, Q1 = -7 and Q2 = 2 are located between two oppositely charged parallel plates. The two charges are separated by a distance of x = 0.33m. Assume that the electric field produced by the charged plates is uniform and equal to E = 6..
By how much horizontal force would you need to apply to a 3.0 N plastic calculator to start it moving from rest? How much horizontal force would you need to keep it moving?
A woman has a mass of 59 kg, What is her weight on earth and What are her mass and her weight on the moon
A particle travels 16 times around a 18-cm radius circle in 37 seconds. What is the average SPEED (in m/s) of the particle
Would you expect to get a more accurate value for m using Equation m = h'/h in the situation where the lens is closest to the object or in the situation where the lens is furthest from the object?
A charge of -2.6 × 10-9 C is at the origin and a charge of 8.1 × 10-9 C is on x-axis at x = 3 m. At what two locations on the x-axis (xpositive, xnegative) is the potential zero.
Physics - Speed and Direction, Driving along a crowded freeway, you notice that it takes a time t to go from one mile marker to the next.
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