Heisenberg Uncertainty Principle (College)
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Heisenberg Uncertainty Principle
1.
Which of the following equations correctly represents the Heisenberg Uncertainty Principle?
- [math]∆x•∆(mv)≤{h}/{4π}[/math]
- [math]∆x•∆(mv)≥{h}/{4π}[/math]
- [math]∆x•∆(mv)≤{h}/{2π^2}[/math]
- [math]∆x•∆(mv)≥{h}/{2π^2}[/math]
2.
Which of the following correctly describes the Heisenberg Uncertainty Principle qualitatively?
- We cannot determine the exact path of an electron
- We cannot determine the exact location of an electron
- We cannot determine the exact path and location of an electron simultaneously
- None of the above
3.
What can be clearly stated about the uncertainty of position, assuming that the uncertainty of momentum is low?
- The uncertainty of position is also low
- The uncertainty of position is high
- The uncertainty of position is equivalent to that of momentum
- The uncertainty of position is indeterminate
4.
What is the uncertainty in the position of an electron, ∆x, assuming that ∆v=0.283 m/s?
- [math]2.05 xx 10^-3 m[/math]
- [math]2.05 xx 10^-4 m[/math]
- [math]1.025 xx 10^-3 m[/math]
- None of the above
5.
What is the uncertainty in the position of an electron, ∆x, assuming that ∆v=0.94 m/s?
- [math]6.16 xx 10^-5 m[/math]
- [math]6.16 xx 10^-4 m[/math]
- [math]3.08 xx 10^-5 m[/math]
- [math]3.08 xx 10^-4 m[/math]
6.
What is the uncertainty in the position of a 1.40-g object, ∆x, assuming that ∆v=0.803 m/s?
- [math]4.69 xx 10^-34 m[/math]
- [math]4.69 xx 10^-35 m[/math]
- [math]4.69 xx 10^-33 m[/math]
- [math]2.345 xx 10^-35 m[/math]
7.
What is the uncertainty in the velocity of an electron, ∆v, assuming that the uncertainty in position, ∆x, is equivalent to [math]5.90 xx 10^-3 m[/math]?
- [math]9.81 xx 10^-4 m/s[/math]
- [math]1.962 xx 10^-2 m/s[/math]
- [math]9.81 xx 10^-3 m/s[/math]
- None of the above
8.
What is the uncertainty in the velocity of an electron, ∆v, assuming that the uncertainty in position, ∆x, is equivalent to [math]7.99xx10^-4 m[/math]?
- 0.148 m/s
- 0.072 m/s
- 0.015 m/s
- 0.036 m/s
9.
In your own words, explain why the Heisenberg Uncertainty Principle has a greater impact on subatomic particles than it has on objects on the macroscopic scale.
10.
As the value of mass increases, the value of ∆p , while the value of ∆x as a result.
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