Imagine another universe in which the value of planck’s constant is 0.0663 Js, but in…
Physics · JEE Advanced · NTA Exams — Atoms and Nuclei
Imagine another universe in which the value of planck’s constant is 0.0663 Js, but in which the physical laws and all other physical constants are the same as in our universe. In this universe, two physics students are playing catch. They are 12 m apart, and one throws a 0.25 kg ball directly towards the other with a speed of 6.0 m/s
What is the uncertainty in the ball’s horizontal momentum, in a direction perpendicular to that in which it is being thrown, if the student throwing the ball knows that it is located within a cube with volume 125 cm3 at the time she throws it ?
- 2.1 kg m/s
- 21.0 kg m/s
- 32 kg m/s
- 0.21 kg m/s
Answer
(D) 0.21 kg m/s
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