Multiple Choice
What is the velocity (in m/s) of an electron that has a wavelength of 3.13 x 105 pm? (Mass of an electron = 9.11 x 10-31 kg).
9. Quantum Mechanics
De Broglie Wavelength
Back9. Quantum Mechanics
De Broglie Wavelength
- Multiple Choice
The faster an electron is moving, the _________ its kinetic energy, and the __________ its wavelength.
- Multiple Choice
Consider an atom traveling at 3.00 x 1015 m/s. The de Broglie wavelength is found to be 7.1316 x 10-39. Determine the mass (in g) of the atom.
- Multiple ChoiceA proton in a linear accelerator has a de Broglie wavelength of 132 pm. What is the speed of the proton?
- Multiple ChoiceA typical electron velocity is 7.27 x 10^6 m/s. Calculate the de Broglie wavelength of an electron having this velocity:
- Multiple ChoiceCalculate the de Broglie wavelength of a 143 g baseball traveling at 83 mph. (Note: 1 mph = 0.44704 m/s)
- Multiple ChoiceCalculate the de Broglie wavelength of a hydrogen atom traveling at 495 m/s. Assume the mass of a hydrogen atom is approximately 1.67 x 10^-27 kg.
- Multiple ChoiceCalculate the energy of a neutron whose de Broglie wavelength is 0.7 Å. Assume the mass of the neutron is 1.675 x 10^-27 kg and use Planck's constant h = 6.626 x 10^-34 J·s.
- Multiple ChoiceCalculate the de Broglie wavelength of an electron traveling with a speed of 3.21 × 10^5 m/s. Assume the mass of an electron is 9.11 × 10^-31 kg.
- Multiple ChoiceConsider an atom traveling at 1% of the speed of light. The de Broglie wavelength of the atom is found to be 3.32 × 10⁻³ pm. Which element is this?
- Multiple ChoiceWhat is the de Broglie wavelength of an electron moving at a speed of 1.0 × 10^8 m/s?
- Multiple ChoiceThe mass of an electron is 9.11 x 10^-31 kg. If the de Broglie wavelength for an electron in a hydrogen atom is 3.31 x 10^-10 m, how fast is the electron moving relative to the speed of light? The speed of light is 3.00 x 10^8 m/s.
- Multiple ChoiceWhat is the De Broglie wavelength for a 3 g marble rolling at a speed of 30 cm/s?
- Multiple ChoiceWhat is the de Broglie wavelength of a 386 g football thrown at 96.6 km/h?
- Multiple ChoiceWhat is the de Broglie wavelength of an electron traveling at 1.12 x 10^5 m/s, given that the mass of an electron is 9.11 x 10^-31 kg?