The atomic weights of Al28, Fe56 and Cd112 (those are Aluminum, Iron and Cadmium) are 27.982, 55.935 and 111.903 atomic mass units (amu), respectively. Imagine fusing two of these Al nuclei to form one Fe nucleus. Then, imagine fusing two of these Fe nuclei to make one Cd nucleus.

a) What are the mass differences between the input nuclei and the output nucleus in the two cases described? Provide your answer in amu and g. Be consistent about signs!

b) Which of these two reactions is exothermic (produces energy) and which endothermic (consumes energy)?

c) Given what you observe from these comparisons, explain under what conditions Fe and Cd might be able to form in stars

List everything that Classical Physics can't explain, that Quantum Physics can explain, and how they can explain it

Calculate the coupled eigenstates that result from the coupling of orbital angular momentum ?=2 with spin angular momentum ?=1/2.

HINT: You may freely use results from Ch. 7 in N. Zettili’s book, including results from the solved problems. Simply quote exactly which result you are using each time.

An insulated cylinder fitted with a movable piston to maintain constant pressure initially contains 100 g of ice at -10 C. Heat is supplied to the contents at a constant rate by a 100 W heater. Make a graph showing temperature of the cylinder contents as a function of time starting at t = 0, when the temperature is -10 C and ending when the temperature is 110 C. Let c = 2.0 kJ/kg K for specific heat of ice from -10 to 0 C and of the steam from 100 to 110 C. The specific heat of water between 0 C and 100 C is c = 4.18 X 103 J/kg K. The value of Lv = 2257 X 103 J/ kg and Lf = 333.5 X 103 J/kg

What radiation, alpha, beta, or gamma, has the largest attenuation in matter? What radiation has the smallest attenuation in matter?

I think the wording of this question is weird. I thought attenuation was similar to absorption because the rays lose power when entering matter. Could some one help me out?

a)A car initially traveling at 31.7 m/s undergoes a constant negative acceleration of magnitude 1.60 m/s² after its brakes are applied.

-How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the tires have radii of 0.310 m? ______ rev

-What is the angular speed of the wheels when the car has traveled half the total distance? _______ rad/s

b) A 50.0-kg child stands at the rim of a merry-go-round of radius 2.45 m, rotating with an angular speed of 3.80 rad/s.

-what is the child's centripetal acceleration? _______ m/s^2

-what is the minimum force between her feet and the floor of the carousel that is required to keep her in the circular path? _____ N

-what minimum coefficient of static friction is required?

A negative charge is moved in the direction of an E⃗E→ field line. Which of the following statements are true? The system is the charge.

A negative charge is moved in the direction of an field line. Which of the following statements are true? The system is the charge.

In a few sentences explain how you can perform and experiment to find out if a circuit element is ohmic or nonohmic. What measurements do you make and how do you decide, based on the results of your measurements.

5. For an object moving in uniform circular motion, does the centripetal force do work on the object?

6. How can two collisions have the same change in momentum even though one collision took longer to happen than the other?

7. In what type of collision is kinetic energy conserved?

8. Ignoring air resistance, an object falls and gains 60 J of kinetic energy. How much gravitational potential energy did the object lose?

9. When is the momentum of a system not conserved?

10. What are the conditions for an object to be in static equilibrium?

Please answer all of them. Thank you so much!

The IORE electric locomotives are some of the most powerful in the world. The locomotives, working in pairs, weigh 180 tons each. They can pull up to 68 iron-ore wagons weighing 120 tons each. The wagons are coupled together using SA-3 couplers that were designed in the Soviet Union in the 1930s.

1. The wheels on the locomotives have a maximum diameter of 1250mm when new and a minimum diameter of 1150mm when worn. If each of the electric motors on the drive axles (of which there are 6 per locomotive) can generate a maximum torque of 115kNm, what is the maximum tensile force that the wagon couplers must withstand when the train is starting from rest?

2. If each electric motor has a constant power output of 920kW, what total force do they apply when the train is travelling on horizontal track at a speed of 60km/h?

3. c) If we assume that the force in part (b) is purely a resistive force due to the air and scales as v², with what constant speed in km/h can the train climb an incline of 10‰ ?

Two forces, vector F₁ and F₂, act at a point. The magnitude of F₁ is 9.50 N, and its direction is an angle 65.0 degrees above the negative direction of x-axis in the second quadrant. The magnitude of F₂ is 5.50 N, and its direction is an angle 53.1 degrees below the negative direction of x-axis in the third quadrant.

Part A: What is the x-component of the resultant force?

Part B: What is the y-component of the resultant force?

Part C: What is the magnitude of the resultant force?

Now let’s consider a projectile problem in which the initial velocity is specified in terms of a magnitude and an angle. Suppose a home-run baseball is hit with an initial speed V₀= 37.0 m/s V₀= 37.0 m/s at an initial angle θ₀=53.1^∘θ₀=53.1^∘. (a) Find the ball’s position, and the magnitude and direction of its velocity, when t= 2.00 s t= 2.00 s. (b) Find the time the ball reaches the highest point of its flight, and find its height H at that point. (c) Find the horizontal range R (the horizontal distance from the starting point to the point where the ball hits the ground).

Express your answer in meters to three significant figures.

A) If the ball could continue to travel below its original level (through an appropriately shaped hole in the ground), then negative values of y corresponding to times greater than 6.04 s would be possible. Compute the x-component of the ball's position 7.40 s after the start of its flight.

B) Compute the y-component of the ball's position 7.40 s after the start of its flight.

C) Compute the x-component of the ball's velocity 7.40 s after the start of its flight.

D) Compute the y-component of the ball's velocity 7.40 s after the start of its flight.

A 5.3-cm-thick layer of oil (n=1.46) is sandwiched between a 1.1-cm-thick sheet of glass and a 2.0-cm-thick sheet of polystyrene plastic (n=1.59). How long (in ns) does it take light incident perpendicular to the glass to pass through this 8.4-cm-thick sandwich?

A 2.0-cm-wide diffraction grating has 1000 slits. It is illuminated by light of wavelength 570 nm . What are the angles of the first two diffraction orders?