9. Quantum Mechanics

Heisenberg Uncertainty Principle

9. Quantum Mechanics

# Heisenberg Uncertainty Principle - Video Tutorials & Practice Problems

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**Heisenberg's Uncertainty Principle **tries to explain the potential duality of an electron behaving as either a particle or wave.

Heisenberg Uncertainty Principle

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concept

## Heisenberg Uncertainty Principle

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## Heisenberg Uncertainty Principle

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example

## Heisenberg Uncertainty Principle Example 1

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Problem

ProblemTo what uncertainty (in m) can the position of a baseball traveling at 51.0 m/s be measured if the uncertainty of its speed is 0.12%? The mass of the baseball is 150 g.

A

4.2 x 10

^{-33}mB

5.7 x 10

^{-33}mC

5.9 x 10

^{-33}mD

4.8 x 10

^{-33}m5

Problem

ProblemA proton with a mass of 1.67 x 10^{-27} kg traveling at 4.7 x 10^{5} m/s has an uncertainty in its velocity of 1.77 x 10^{5} m/s. Determine its uncertainty in position.

A

1.8 x 10

^{ -13}mB

3.6 x 10

^{-12}mC

2.5 x 10

^{-13}mD

4.2 x 10

^{-12}m## Do you want more practice?

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PRACTICE PROBLEMS AND ACTIVITIES (12)

- Using Heisenberg's uncertainty principle, calculate the uncertainty in the position of (b) a proton moving at ...
- Using Heisenberg's uncertainty principle, calculate the uncertainty in the position of (a) a 1.50-mg mosquito ...
- Calculate the uncertainty in the position of (a) an electron moving at a speed of 13.00 { 0.012 * 105 m/s
- An electron has an uncertainty in its position of 552 pm. What is the uncertainty in its velocity?
- An electron traveling at 3.7 * 105 m>s has an uncertainty in its velocity of 1.88 * 105 m/s. What is the un...
- Use the Heisenberg uncertainty principle to calculate the uncertainty in meters in the position of a honeybee ...
- The mass of a helium atom is 4.0026 amu, and its average velocity at 25 °C is 1.36 * 103 m/s. What is the unce...
- What is the Heisenberg uncertainty principle, and how does it affect our description of atomic structure?
- Why do we have to use an arbitrary value such as 90% to determine the spatial limitations of an orbital?
- As discussed in the A Closer Look box on 'Measurement and the Uncertainty Principle,' the essence of the uncer...
- Consider the discussion of radial probability functions in 'A Closer Look' in Section 6.6. (a) What is the dif...
- What is the uncertainty of the position of the bacterium?