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Two atoms will interact via electronical forces between their protons and electrons. One fairly good approximation to the electrical energy is the Lennard-Jones formula U(r)=k[(a/r)^12 - 2(a/r)^6] where r is the center-to-center distance between the atom and k is a positive constant. a) plot U vs r. b) determine the force that goes with this potential. c) show that the equilibrium separation is a. d) what is the effective spring constant about the point r=a?
A helium balloon ride lifts up passengers in a basket. Assume the density of air is 1.28 kg/m3 and the density of helium in the balloon is 0.18 kg/m3. What is the magnitude of the buoyant force on each person
a certain ideal gas has a value of constant y (which is Cp/Cv) = 4.3. What is the molar specific heat at constant pressure
Electrons are ejected from a certain metallic surface with speeds ranging up to 4.2 105 m/s when light with a wavelength of ? = 615 nm is used. What is the work function of the metal?
A 5.4 cm diameter circular loop of wire is in a 0.72 T magnetic field. The loop is removed from the field in 0.29 s . Assume that the loop is perpendicular to the magnetic field. Part A What is the average induced emf? Express your answer using tw..
two objects are identical and small enough that their sizes can be ignored relative to the distance between them which
Danny's basis in his partnership interest was $26,500 and the partnership has no liabilities. If he sells his interest for $35,000, illustrate what is his gain or loss realized and recognized?
A 25 pF parallel-plate capacitor with an air gap between the plates is connected to a 100 V battery. What is the change in the charge on the positive plate
If an electric field has a magnitude of 3.4 kV/m, then find the magnitude of the corresponding magnetic field
a muon and an antimuon are moving in opposite directions with velocities of -0.7 c and 0.7 c respectively. when they
Your little cousin pulls a red wagon along the sidewalk a distance 12.5 m. What work does he do on the wagon
A drone, flying 300m above ground, observes a man walking on a road in a cold night (0°C). how many photons/sec does it receive from the man and from a similar surface of road
One end of a cord is fixed and a small 0.390-kg object is attached to the other end, obtain the tangential and radial components of acceleration
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