Suppose that the speed of an electron traveling 1.0 km/s is known to an accuracy of 1 part in 10,000 (that is, within 0.01%)
What is the minimum uncertainty in the position of this electron? (melectron = 9.11 × 10-31 kg, h = 6.626 × 10-34 J ? s)
1.2 mm
You might also like to view...
What will you see with the following type of optic: Convex lens
A. Image is smaller |
B. Image is the same |
C. Image is larger |
The Moon has been unable to hold any atmosphere because:
A) it has a low escape velocity. B) it cooled very slowly during its formation. C) its orbital velocity is higher than its escape velocity. D) its gravitational acceleration is more than 10 m/s2.
Ten kilograms of water at 0°C is mixed with 10 kg of water at 100°C. What is the change in entropy (in cal/K) of the system?
A. 1000 B. 480 C. ?720 D. 240 E. ?168
An electron, initially at rest, accelerates through a potential difference of 1 V, gaining kinetic energy KEe, while a proton, also initially at rest, accelerates through a potential difference of –1 V, gaining kinetic energy KEp, which of the following relationships holds?
1. KEe = KEp 2. KEe < KEp 3. KEe > KEp 4.The answer can’t be determined from the given information