Because of electrons high speed, which of its properties cannot simultaneously be measured with certainty?

a. position and charge
b. position and momentum
c. direction and charge
d. charge and momentum

Position and momentum

Explanation:

According to Heisenberg uncertainty principle, it is not possible to find the position and momentum of an electron simultaneously. Mathematically, it can be written as :

Where

is uncertainty in position

is uncertainty in momentum

The above equation shows that if we know the position of an electron accurately, then its momentum cannot be known accurately and vice versa.

Hence, the correct option is (b) "Position and momentum".

temp rises, and expansion

  distance on the y-axis and time on the x-axis.

explanation:

the instantaneous velocity = change in position/time taken

the slope of the graph should give instantaneous velocity.

  slope of a graph = change in value of y -axis / change in values of x -axis

  comparing both the equations

    change in value of y -axis = change in position

  change in values of x -axis = time taken

so position values should be on the y axis and time values should be on the x axis.

distance on the y-axis and time on the x-axis.