"The position and velocity of a small particle like an electron cannot be simultaneously determined." This statement is:

$A$ dust particle has a mass of $10^{-11} \, g$,a diameter of $10^{-4} \, cm$,and a velocity of $10^{-4} \, cm \, sec^{-1}$. If the error in the measurement of velocity is $0.1 \%$,what is the uncertainty in its position?

If uncertainty in position and momentum of an electron are equal,then uncertainty in its velocity is

The uncertainty in the position of an electron $(mass = 9.1 \times 10^{-28} \ g)$ moving with a velocity of $3.0 \times 10^4 \ cm \ s^{-1}$ accurate up to $0.001\%$ will be ................. $cm$ (Use $\frac{h}{4\pi}$ in the uncertainty expression,where $h = 6.626 \times 10^{-27} \ erg \ s$)

Uncertainty in the position of an electron (mass $= 9.1 \times 10^{-31} \ kg$) moving with a velocity $300 \ ms^{-1}$,accurate up to $0.001\%$ will be:

An accelerated electron has a speed of $5 \times 10^{6} \ m \ s^{-1}$ with an uncertainty of $0.02 \ \%$. The uncertainty in finding its location while in motion is $x \times 10^{-9} \ m$. The value of $x$ is $......$ (Nearest integer)
[Use mass of electron $= 9.1 \times 10^{-31} \ kg, h = 6.63 \times 10^{-34} \ J \ s, \pi = 3.14]$