Quantum Mechanics Answers

In a measurement of position and momentum that involved an uncertainty of 0.003 %, the speed of an electron was found to be 800 m/s. Calculate the corresponding uncertainty that arises in determining its position. *

An electron is accelerated through potential of 150 Volts, wavelength associated with it is ?

What is Matter wave? Explain duality of particle-wave of matter. Prove that De-
Broglie matter wave is equivalent to a wave packet.

In the ground state of harmonic oscillator,what is the probability of finding the particle outside the classical allowed region

When a boy is sitting 1 meter from the center of a see-saw, another boy must sit on the
opposite side 0.5 meter farther from the center compared to the first boy to maintain balance.
When the first boy carries an additional weight of 10 kg and sits 1.5 meters from the center, the
second boy must now move to 3 meters from the center to maintain balance. What is the weight
of the heavier boy?

The value of parity in s and t space in quantum mechanics

The value of parity in s and t space in quantum mechanics

A ball is launched from ground level with an initial upwards velocity of 20 m/s and an initial horizontal velocity of 30 m/s. How far from its starting position does the ball land assuming the ground is level?

Calculate the maximum distance from a goal post that a player must stand if he must shoot the ball to score a goal,assuming the player can shoot the ball with a maximum velocity of 10 metre per second

Two small metallic spheres each of mass m = 0.200 g are suspended as pendulums by light strings of length L shown. The spheres are given the same electric charge of 7.2 nC, and they come to equilibrium when each string is at an angle θ = 5.00o with the vertical. How long are the strings?