Determine the magnitude of the electric field at the surface of a lead-206 nucleus, which contains 82 protons and 124 neutrons. Assume the lead nucleus has a volume 206times that of one proton and consider a proton to be a sphere of radius 1.20 ? 10^-15 m.  ??? N/C

A) Calculate the kinetic energy of a proton (1.67×10−27kg) traveling 8.30×10⁷ m/s .

B) Calculate the momentum of a proton (1.67×10−27kg) traveling 8.30×10⁷ m/s .

C) By what percentages would your calculations have been in error if you had used classical formulas?

Calculate the binding energy per nucleon for the following isotopes.

(a) ⁹Be

b) ¹⁹⁵Pt

(c) ⁶⁴Zn

(d) ⁷Li

• What does it mean for two variables, such as current and potential, to have a linear relationship to each other? Describe two devices— incandescent lamps and diodes— in which current and potential do not follow Ohm’s Law. Why are these two devices exceptions? Use Kirchhoff’s loop rule for potentials and junction rule for currents to describe how a single battery in a car can be used to power multiple electrical devices.

6) An airplane is flying over the countryside with a velocity of 85.0 m/s at an angle of 19.5o with respect to the horizontal. The airplane releases a crate of supplies when it is 85 m directly above a person standing on the ground. How far from the person will the crate land?

7) A motorcycle stunt rider rides horizontally off the edge of a vertical cliff of height 8.5 m and lands safely 12.3 m from the base of the cliff.
a) With what velocity did the motorcycle leave the cliff?
b) What was the direction of the motorcycle

A photon collides with an electron and is scattered in a direction 105∘ from its original direction. If the photon loses 52.0% of its momentum in the process, what was the photon's initial wavelength?

A four legged sling distributes its load equally among its four legs. When the load is picked up, each leg forms 45° with the horizontal. The nominal breaking strength of the chain is specified to be 10 tons. If the load that is carried is 5 tons, Would it be safe to carry the load? What factors might play a role in setting 20% as the safety factor?

Directions: Write the value and uncertainty in the proper “presentation format”. (1) Round off uncertainty to two (2) significant figures (2) Round off value to same decimal place as last significant digit in uncertainty (3) When using scientific notation, make sure value and uncertainty are expressed to same power of ten, with decimal point placed after first digit in the value. Example: (5.423 ± 0.034) x 10-5 (4) Hint: If your value is greater than 10,000 or less than 0.01 you must use scientific notation. Note on Grading: This sheet must be done perfectly to receive an 8/10. If this second version is not done perfectly, then you will be given a new version, and if that one is completed perfectly then you will receive a 7/10. You will continue to lose points until this sheet is completed perfectly. See lab manual for details on presentation format.

# Value Uncertainty    Presentation Format (Value ± Uncertainty)

1 7.286277704 0.035965099

2 1.681735783 0.005686618

3 61.3568665 0.981143685

4 2690973.876 48907.07815

5 1.75447E-06 1.87125E-07

6 6.165959668 0.320999526

7 0.000861333 1.32518E-05

8 1.05259E-05 1.66169E-07

9 0.002142297 5.56807E-05

10 1.41859E-06 3.87179E-08

Generate an entangled pair of qubits. Send to Alice and Bob far away from each other. Both measure along basis in one of two possible orientations. The result is sent to Charlie at some later time, who compares the corellations and concludes the Bell inequalities have been violated.

But in Copenhagen, Charlie can say, the pair of results didn't become real until I collected both observations from Alice and Bob. They weren't real when either of them measured them. They only became real once I observed them. Then, both results, when they materialized, materialized at the same place. So, no nonlocality?

The position of a mass oscillating on a spring is given by x=(5.8cm)cos[2πt/(0.64s)]

Part A

What is the frequency of this motion?

Express your answer using two significant figures.

Part B

When is the mass first at the position x=−5.8cm?

Express your answer using two significant figures.

2) The position of a mass oscillating on a spring is given by x=(3.3cm)cos[2πt/(0.80s)].

Part A

What is the period of this motion?

Express your answer using two significant figures.

Part B

What is the first time the mass is at the position x=0?

Express your answer using two significant figures.

3)A ball rolls on a circular track of radius 0.70 m with a constant angular speed of 1.4 rad/s in the counterclockwise direction.

Part A

If the angular position of the ball at t= 0 is θ = 0, find the x component of the ball's position at the time 2.6 s . Let θ= 0 correspond to the positive x direction.

Express your answer using two significant figures.

Part B

Find the x component of the ball's position at the time 5.1 s .

Express your answer using two significant figures.

Part C

Find the x component of the ball's position at the time 7.5 s

Express your answer using two significant figures.

Thanks for the help!

A 2.00-kg package is released on a 53.1∘ incline, 4.00 m from a long spring with force constant 120 N/m that is attached at the bottom of the incline (Figure 1) . The coefficients of friction between the package and the incline are μs=0.40 and μk=0.20. The mass of the spring is negligible.

A. What is the speed of the package just before it reaches the spring?

B. What is the maximum compression of the spring?

C. The package rebounds back up the incline. How close does it get to its initial position?

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