Calculate the de broglie wavelength (in picometers) of a hydrogen atom traveling at 440 m/s.

De broglie wavelength, , where h is the Planck's constant,  m is the mass and v is the velocity.

Mass of hydrogen atom,  

v = 440 m/s

Substituting

   Wavelength

So  the de broglie wavelength (in picometers) of a hydrogen atom traveling at 440 m/s is 902 pm

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

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