#### Change in Mass in the Decay Process

Consider a decay process: A --> B + C, where the particle masses Ma, Mb, Mc are known. Let us go the rest frame of A particle, so that in this frame it is not moving. What is the energy of A in this frame? If particle B has a momentum p, what is the total energy of the outgoing particles? Can you no...

#### Thomson's Experiment and Charge to Mass Ratio

Thomson's Experiment: Instead of turning off the electric field to determine the charge-to mass ratio, Thomson proceeded to switch off the magnetic field. Suppose that the electric field is pointed towards the y-axis. Then, as the electron travels along the x-axis and hits the glass tube located say...

#### Angular probability distribution

1. Orbital angular momentum Consider the angular wave function: (see attached) a) Construct the angular probability density. Show that you can write this as a product of (see attached) and show that both functions are probably normalized.

#### Physics: Center of Mass of a Red Ball

See attached graph. On a graph a red ball has a mass of 2.8 kg and a blue ball of 3.5 kg. The coordinates for the red ball are (2,3) and the blue ball (5,2). To two decimal places what is X Center of Mass? What is Y CM? The answer for X CM is 3.22, and 2.94 for Y CM. Please show me the steps...

#### Using the physical conditions present in the universe during the era of recombination (T=3000 and pm=10^-18 kg/m^3), show by calculation that the Jeans length for the universe at that time was about 100 ly and that the total mass contained in a sphere with this diameter was about 4x10^5 Msun.

Using the physical conditions present in the universe during the era of recombination (T=3000 and pm=10^-18 kg/m^3), show by calculation that the Jeans length for the universe at that time was about 100 ly and that the total mass contained in a sphere with this diameter was about 4x10^5 Msun.

#### Physics - Wave Motion..

The speed of a transverse wave on a string is 450 m/s, and the wavelength is 0.18m. The amplitude of the wave is 2.0 mm. How much time is required for a particle of the string to move through a total distance of 1.0 km?