Find atom in unstable state before it spontaneously decays

Assignment Help Electrical Engineering

Reference no: EM13247003

A sample of radiocactive material undergoes decay such that the number of atoms N(t) remaining in the unstable state at time t is related to the number No at t = 0 by the relation N(t) = No exp(t\tau). Show that tau is the average lifetime < t > of an atom in the unstable state before it spontaneously decays.

Reference no: EM13247003

Questions Cloud

Determine the value required for any pre-scaling : A PWM is used in 8-bit mode to produce a signal with a 1 msec period and 60% duty cycle. Determine the value required for any pre-scaling, and the values for the period, and duty cycle registers. The E-clock is 24 MHz.

Which is preferred if the target lifetime of the system : (Probability of negative lifetime is negligible) Lifetime of chip 2 is also a Gaussian RV with mean 22,000 and standard deviation 1000 hours. Which is preferred if the target lifetime of the system is (i) 20,000 hours and (ii) 24,000 hours

Express h in standard form for drawing a bode plot : Plot the Bode straight-line approximation phase plot (i.e., f(f) vs. f) for the transfer function over the range f = 10 rad/s to f = 100 krad/s using the 4-cycle semi-log graph paper provided. Label all slopes in degrees/dec and all levels in degr..

Calculate ni and the concentration of electrons and holes : An unknown semiconductor has Eg = 1.1 eV and Nc = Nv. It is doped with 10^15 cm^-3 donors where the donor level is 0.2 eV below Ec. Given that Ef is 0.25 eV below Ec, calculate ni and the concentration of electrons and holes in the semiconductor a..

Find atom in unstable state before it spontaneously decays : A sample of radiocactive material undergoes decay such that the number of atoms N(t) remaining in the unstable state at time t is related to the number No at t = 0 by the relation N(t) = No exp(t\tau)

How many atoms are found inside a unit cell of simple cubic : How many atoms are found inside a unit cell of a simple cubic, body-centered cubic, and faced-centered cubic crystal How far apart interms of lattice constant a are nearest neighbor atoms in each case, measured from center to center

What is the standard deviation of the sample mean : What is the probability that the interpupillary distance for a randomly selected male will be between 64 and 67 mm and What is the standard deviation of the sample mean

Write the test bench code to test the design : Write the verilog code for a circuit that counts the number of 1s in a byte. Write the verilog code using a structural approach based on four Half-Adders, two 2-bit adders and one 3-bit adder. Write the test bench code to test the design.

Calculate speed if load torque is reduced to three times : The DC shunt motor is running at full load with a supply voltage of 440 V and a supply current of 70 A. The rotation speed in full load is 1000 rpm, the field resistance is 200 Ohm and the armature resistance is 0.2 Ohm.

User Account

All Pages