In an experiment to find the speed and position of an electron ( m = 9.11 × 10 –

Question

In an experiment to find the speed and position of an electron (m = 9.11 × 10–31 kg), three physicists claim to have measured the position of the electron to within ± 10–9 m. They reported the following values for the speed of the electron:

Researcher A

3 × 106 ± 2 × 104 m/s

Researcher B

4 × 108 ± 2 × 107 m/s

Researcher C

2 × 107 ± 5 × 105 m/s

Which of these measurements violates one or more basic laws of modern physics?

Researcher A

3 × 106 ± 2 × 104 m/s

Researcher B

4 × 108 ± 2 × 107 m/s

Researcher C

2 × 107 ± 5 × 105 m/s

Explanation / Answer

Reasearcher B is making mistake because the speed of electron can not be more then the speed of light if it happen then the mass become infinte that not possible.

speed of light is 3*10^8 m/s <4 × 108

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.