One model for the potential energy of a two-atom molecule, where the atoms are separated by a distance r, is U(r)=Uo((ro/r)11−(ro/r)5) where r0 = 0.70 nm and U0 = 8.2 eV. Note: 1 eV = 1.6 x10^−19J.

You can use SI units, but CAPA will also accept these units that will simplify your calculations:

Force = eV/nm
Energy = eV
distance = nm

What is the distance between the atoms when the molecule is in stable equilibrium?

Part f - example: finding two forces (part i) two dimensional dynamics often involves solving for two unknown quantities in two separate equations describing the total force. the block in (figure 1) has a mass m=10kg and is being pulled by a force f on a table with coefficient of static friction îľs=0.3. four forces act on it: the applied force f (directed î¸=30â above the horizontal). the force of gravity fg=mg (directly down, where g=9.8m/s2). the normal force n (directly up). the force of static friction fs (directly left, opposing any potential motion). if we want to find the size of the force necessary to just barely overcome static friction (in which case fs=îľsn), we use the condition that the sum of the forces in both directions must be 0. using some basic trigonometry, we can write this condition out for the forces in both the horizontal and vertical directions, respectively, as: fcosî¸â’îľsn=0 fsinî¸+nâ’mg=0 in order to find the magnitude of force f, we have to solve a system of two equations with both f and the normal force n unknown. use the methods we have learned to find an expression for f in terms of m, g, î¸, and îľs (no n).

In which of the following cases is work being done on an object? question 2 options: pushing against a locked door carrying a box down a corridor pulling a trailer up a hill suspending a heavy weight with a strong chain

Who was the first scientist to measure speed as distance over time?