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Quantum Mechanics

A rock is thrown horizontally from the top of a cliff 88 m high, with a horizontal speed

of 25 m/s.With what velocity does the rock hit?

Quantum Mechanics

Calculate the time for an atomic system for which that system can have the excitation energy for

the spectral line of width 10-4Å at wavelength 6000Å.

Quantum Mechanics

A rock is thrown horizontally from the top of a cliff 88 m high with a horizontal speed of 25 m/s, what is the direction of velocity?

Quantum Mechanics

1. Give the number of protons , neutrons, and electrons in 238/92 U

2. What is the radius of the nucleus of 24/14 Si? What is its volume?

Quantum Mechanics

A rock is thrown horizontally from the top of a cliff 88m high , with a horizontal speed of 24m/s with what velocity does the rock hit and what is the direction of velocity

Quantum Mechanics

a rock is thrown horizontally from the top of a cliff 88 m high, with a horizontal speed of 25 m/s. with what velocity does the rock hit?

Quantum Mechanics

Show that simple harmonic motion y(t) = C1 cos ωt + C2 sin ωt can be written as:

a. y(t) = A sin(ωt + ϕ0)

b. y(t) = A cos(ωt + ϕ1)

Quantum Mechanics

**1. The speed of the bullet (m = 50g) and the speed of an electron ( m = 9.1 * 10**^{-28}**g) are measured to be the same, namely 300 m/s, with an uncertainty of 0.01%. With what fundamental accuracy could we have located the position of each, if the position is measured simultaneously with the speed in the same expt.?**

Quantum Mechanics

**1. A small object of mass 1 mg is confined to move between two rigid walls separated by 2 cm. (a) Calculate the minimum speed of the object. (b) If the speed of the object is 4 cm/s, find the corresponding value of ‘n’.**

Quantum Mechanics

Calculate the uncertainty in wavelength of a light emitted when an atom undergoes transition from an excited state that lasts for 10^{-3} second.