3 years ago

You are riding in a train that is traveling at a speed of 120km /h how long will it take to travel 950 km

Physics

1 answer:

nikdorinn [45]3 years ago

4 0

You divide 120 from 950 and that's the number of hours, 7.9

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The muzzle velocity of a rifle bullet is 709 m s−1along the direction of motion. If the bullet weighs 35 g, and the uncertainty

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Answer:

Uncertainty in position of the bullet is $\Delta x=1.07\times 10^{-33}\ m$

Explanation:

It is given that,

Mass of the bullet, m = 35 g = 0.035 kg

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The uncertainty in momentum is 0.20%. The momentum of the bullet is given by :

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$p=0.035\times 709=24.81\ kg-m/s$

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$\Delta x=\dfrac{h}{4\pi \Delta p}$

$\Delta x=\dfrac{6.62\times 10^{-34}}{4\pi \times 0.049}$

$\Delta x=1.07\times 10^{-33}\ m$

Hence, this is the required solution.

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