Construct a list for each radionuclide, its half life, mode of decay, and principal type(s) and energies of emitted radiations. Avoid radiations with energies < 10 keV or yields < 1%. Put each radionuclide in a separate list.

H-3
C-14
F-18
P-32
S-35
Co-60
Sr-90
Tc-99m
I-125 & I-131
Cs-137
Ra-226
Am-241

1. Determine the spring constant for the stiffer spring. Your answer should include a plot of yur data. NOTE the stiss spring has maximum lenght of 17 cm .

2.Determine the spring constant for the stretchy spring. NOTE your answer should include a plot of your data. The strecthy spring has a maximum length of 25 cm

3.Is there any correletion between the spring constant values for teh spring and their apparent stiffness?

Q6).

A coil with 5 windings or turns, and an area of 0.0679m² rotates in a uniform magnetic field of magnitude 0.886T. The emf induced in the coil has the following form as a function of time :

ε(t)= ε₀ sin(ωt)

ε₀ = 22.3 Volts. Calculate ω in radians per second.

Q7).

The current in a long solenoid with 19 turns per meter of radius 0.8987m depends on time as follows:

I_s= 38.7(Ampere/second)*t

where t is time.

A circular loop of wire of radius 0.163m is concentric around the solenoid. An electrical current of 0.00494 Amps is induced in the loop. (Solenoid can be treated as infinitely long. Note the wire loop is outside the solenoid.) Find the resistance of the loop in Ohms.

Q7A). In the previous situation, in which a current through a solenoid is increased and thereby a current is induced in a wire loop which is concentric with the solenoid. Is the induced current in the loop in the same direction as the current in the solenoid or in the opposite direction?

A train accelerates at 1.41 m/s² from rest to a steady speed in 68.48seconds. It maintains that speed for 29.55 miles and then starts slowing down at 1.39 m/s² until coming to a stop at its destination. What is the total distance traveled in meters?

Q1// Do the electrons or phonons carry the greater part of the heat current in a metal? Explain that.

Q2//Explain the origin of the energy gap and find the magnitude of the energy Gap.

Q3// Give general remarks about Bloch^,s theorem.

Q4//    Complete the following statements :-

1. The energy of the topmost filled level in the ground state of the (N) electron System is called as------------------------.
2. The number of orbitals per unit energy range is called as----------------------.

     (3)The model answers almost all the qualitative questions about the behavior of electron in metals is --------------------------. (4) The electrical resistivity of most metals is dominated at liquid helium temperature by collisions of the conduction electrons with--------------------------- in the lattice.

(5) The crystals is called ---------------------- or semimetal if one or two bands are slightly filled or slightly empty.                                                          

(6)At temperatures much below both the Debye temperature and the Fermi temperature ,the heat capacity of metals may be written as --------------------.                        

(7) The number of orbitals with the same energy is called -----------------------.

(8) At absolute zero the chemical potential is equal to ---------------------------.

(9)The region which results from intraction of conduction electron waves with the ion cores of the crystals is called-------------------------.

The power usage (P = (E^2)/R) of a strip heater is to be determined by measuring heater resistance and heater voltage drop simultaneously. The resistance is to be measured using an ohmmeter having a resolution of 1 Ohm and an error stated to be within 1% of its reading, and voltage is to be measured using a voltmeter having a resolution of 1 V and a stated error of 1% of reading.

It is expected that the heater will have a resistance of 100 Ohm and use 100 W of power. Determine the uncertainty in power determination to be expected with this equipment at the zeroth-order level (i.e. ignoring the individual instrument errors). Also, recompute the uncertainty at the design stage.

why isnt carbon 14 dating reliable?c

Moving electrical charge feels a force by magnetic field -Right Hand Rule 2 The attached figure shows the right hand doing this in our second right hand rule (RHR2) for finding the direction of the magnetic force, F, on a positively charged particle, charge q, moving with velocity, v, due to a magnetic field, B. The magnitude is given by R?⃗R=?|?⃗|R?-⃗R????.2) (Introduction) Suppose there is a uniform magnetic field, B, pointing into the page (so your index finger will point into the page). If the velocity of a proton is straight up(thumb pointing up) then RHR2 shows that the force points to the left. What would the direction of the force be if the velocity were a)down, b)to the right, c)to the left, d)into the page, and e)out of the page?

You visit a national park with your friend one weekend. You encounter an old railroad tunnel which is very dark and you are not sure if the tunnel is blocked on the other end. You happen to have a frequency generator app on your cell phone frequency. You decide that to generate resonances in the tunnel with your app. You hear successive resonances at 55Hz, 57.5 Hz, 60Hz, 62.5 Hz …etc. (I) Can you use this information alone to determine if the tunnel opened or closed at the other end? (II) What is the length of the tunnel? (III) What is the maximum number of resonances you can produce in this tunnel between 50 Hz and 100 Hz?   Use 343.0 m/s for the speed of sound in air. (

A current of 5.20 kg / s of water vapor at 40.0 bar and 320 ° C is passed to an adiabatic turbine. The outlet pressure is 20.0 bar. The isentropic efficiency of the turbine is 97.4%. What is the work, in kW?

(Uses 3 significant figures)

3.70 kg / min of air as ideal gas enters a steady state compressor that runs adiabatically. Air enters P1 = 300 kPa and T1 = 440 K and exits at P2 = 500 kPa. If the isentropic efficiency of the turbine is 0.876, what is the work, in kW?

Heat conduction from a hotter object to a colder object through a barrier (e.g. warm inside out to cold outside air through a window) is descrbed by Q?t=kAL|T1?T2| where k is the conductivity of the barrier, L is the distance the heat has to travel between hotter and colder objects, A is the total cross sectional area of the barrier that is perpendicular to heat flow, and T1 and T2 are the two temperatures. In this problem, you will connect real life situations to this equation.

Part A. Gulls are warm-blooded animals that often have their feet in frigid cold water. Their feet, amazingly, are cold blooded. Let's say that their bodies are about 37 degrees Celcius and their feet are 27 degrees Celcius. How does having cold blooded feet versus warm blooded feet slow down conduction? Assume the size and shape of the feet are the same in both cases. (In this case the hot object is the gull foot, the cold object is the water, and the barrier we can take as the thin layer of water that is stuck to the gull feet by viscous forces.) Gulls are warm-blooded animals that often have their feet in frigid cold water. Their feet, amazingly, are cold blooded. Let's say that their bodies are about 37 degrees Celcius and their feet are 27 degrees Celcius. How does having cold blooded feet versus warm blooded feet slow down conduction? Assume the size and shape of the feet are the same in both cases. (In this case the hot object is the gull foot, the cold object is the water, and the barrier we can take as the thin layer of water that is stuck to the gull feet by viscous forces.)

Part B. I have a pair of mittens (where all four fingers are in one "compartment") and a pair of gloves (where each finger has its own "compartment"). Imagine they are both made of the exact same material. My fingers (we won't discuss the thumb) are much warmer in the mittens because I have a pair of mittens (where all four fingers are in one "compartment") and a pair of gloves (where each finger has its own "compartment"). Imagine they are both made of the exact same material. My fingers (we won't discuss the thumb) are much warmer in the mittens because

the area of the barrier is smaller than for gloves
the conductivity of the barrier is smaller than for gloves
the length of the barrier is larger than for gloves

Part C. An thermos keeps contents at the same temperature, in part by having a partial vacuum between the inner cylinder and the outer cylinder of the thermos. A partial vacuum is a region with very few gas particles (probably at least 100 times fewer particles than in normal air). How does the presence of a vacuum reduce the rate of conduction? (Assume the size and the shape of the thermos is otherwise the same, and we have the same hot coffee inside and same room temperature outside.) An thermos keeps contents at the same temperature, in part by having a partial vacuum between the inner cylinder and the outer cylinder of the thermos. A partial vacuum is a region with very few gas particles (probably at least 100 times fewer particles than in normal air). How does the presence of a vacuum reduce the rate of conduction? (Assume the size and the shape of the thermos is otherwise the same, and we have the same hot coffee inside and same room temperature outside.)

The conductivity decreases for a vacuum
The cross sectional area of the barrier increases for a vacuum.
The length of the barrier increases for a vacuum.
The temperature difference increases for a vacuum.

Sam and Ryan stand at some distances apart in a park, each making sound with an identical 512Hz tuning fork. A bird resting at the midpoint between them detects a sound of intensity level of 40dB, assume this bird has a threshold of hearing of 10^-14 w/m², (I) what is the pressure amplitude of the sound wave from each tuning fork? (II) If the power output of each tuning fork is 10^-6 W, how far apart are Sam and Ryan ? (III) The bird is now flying away. When the bird is 1 km from Sam, the intensity drops to 10 dB, how far is the bird from Ryan?

A very large conducting plate (grounded) covers the yz plane. An infinitely long wire with constant linear charge density λ is placed at a distance d from the plate. You can assume that the wire is at position (x, y) = (0, d) and extends along the z direction.

a) Draw the location of the image charge that gives V = 0 on the conducting plate. Indicate value(s) and position(s) of the image charge(s).

b) Determine V (x, y) where the point (x, y) is an arbitrary position (with x > 0 that is not on the line charge.

c) Determine the surface charge density at point (x, y) = (0, 0)