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The de Broglie wavelengths of a 46 g golf ball with a velocity of 30 m/s is()
The de Broglie wavelengths of a 46 g golf ball with a velocity of 30 m/s is()
A.3.7×10-24 fm
B.3.7×10-24
C.4.8×10-24 nm
D.4.8×10-34 m
正确答案:4.8×10-34 m
标签:
原子物理
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A metal surface illuminated by 8.5×1014 Hz light emits electrons whose maximum energy is 0.52 eV.The same surface illuminated by 12.0×1014 Hz light emits electrons whose maximum energy is 1.97 eV.The work function of the metal is(B )。
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The kinetic energy of a proton whose de Broglie wavelength is 1.0 fm is()