Review3 - 2 A 0.03 kg mass of goop is launched upward at an...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 2. A 0.03 kg mass of goop is launched upward at an angle from a frictionless spring launcher and surface (see picture at right). The goop eventually hits the ground, sticking in place. The spring has a spring constant of 14.0 N/rn, and the mass is initially pulled back a distance of 0.2 meters from the spring’s equilibrium position. \ The mass is initially 0.5 m above the ground. Set your y = 0 to be at the ground. ”‘020 m (a) Write an expression for the total energy of the system in terms of all the energy systems that are changing from the time the mass is motionless on the spring to just before it hits the ground. You must write subscripts on your energy terms indicating a specific time in which you can calculate a value [no numbers here; you will calculate Eror in part (b)]. (b) Find a numerical value for ETOT in units of Joules. You must explain under which conditions and how you determined this value. (c) (Extra credit: 10%) Find the speed of the gOOp (final speed) just before it hits the ground. You must show your work. Additional uestions 1) Plot the KB for the flowerpot in problem 1. 2) Redo the plot of PE and KB for the flowerpot if the F0 is now located at the ground. Did ETOT change? Why or why not? If, yes, then what is its value? 3) For problem 2: set y:0 at the height where the goop starts (i.e., 0.5 m above ground). What is Eror now? 4) Find the final speed of the goop just before it hits the ground for this new y=0, using the new value for ETOT. Remember the yIO has changed; what is your PEg(final) value in this case?. Write out the formula for Eror in terms of all the E(final) terms, and then solve for the speed. You should get the same value as before. Show your work. Quiz 5 -10 1. All parts of this question refer to two elements, A and (r = atom separation in units of 10 m) B, whose atom-atom potentials are shown below. ;i‘ , ; 14.; , fl ' [is ' ' ' ' ; (a) Are the molar volumes (volume of one mole) of these two elements in the liquid phase the same, or is one greater than the other? Answer and clearly explain your reasoning below. For parts (b) and (c): fill in the blanks with a numerical reading from the appropriate axis (without units) for each atom type. (b) What is the equilibrium separation of the two atoms (for each atom type) when they are bound? potential energy in units of 10'21 J A: B: (c) Consider the following situation for parts (i) — (ii): The total energy of each system of two atoms is —1.5. (i) At what separation(s) is the speed of the particles zero? A: B: (ii) What is the maximum kinetic energy for each system? A: B: It must be clear to the grader how you got your answer to this part; show your work below. ...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern