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Question1
Visualize a crystal that exploits for binding Coulomb attraction of the positive and negative ions of the identical atom or molecule R. This is believed to occur with certain organic molecules, but it is not found when R is a single atom. Utilize the data in Tables 5 and 6 in Kittel to evaluate the stability of such a form of Na in the NaCl structure, relative to the normal metallic Na. estimate energy at the observed interatomic distance in metallic Na, and use 0.78 eV as the electron affinity of Na.
Question2
An airplane is flying with a velocity of 95.0m/s at an angle of 18.0^circ above horizontal. As the plane is a distance 104m directly above a dog that is standing on level ground, a suitcase drops out of the luggage compartment. How far from a dog will the suitcase land? You can overlook air resistance.
Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. What is the orbital period of the faster planet
Explain by how much time is required for the bullet to reach the target? Using the approximate value of g = 10 m/s2, how far does the bullet fall in this time?
A water pipe having a 2.60 cm inside diameter carries water into the basement of a house at a speed of 0.827 m/s, find water pressure (in kPa) at the second floor
A 45-kg crate is placed on an inclined ramp. When the angle the ramp makes with the horizontal is increased to 25 degrees , At what angle does the crate begin to slide
The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 11-g nail
A set of crash tests consists of running a test car moving at a speed of 13.0 m/s (28.6 m/h) into a solid wall. Calculate the size of the average force which acts on the dummy during that time
When a potential difference of 160 V is applied to the plates of a parallel-plate capacitor, What is the spacing between the plates
A 12 kg weather rocket generates a thrust of 250 N. The rocket, pointing upward, is clamped to the top of a vertical spring. The bottom of the spring, whose spring constant is 560 N/m, is anchored to the ground. What is the rocket's speed while the s..
The density of ice is 917 kg/m3 and the density of sea water is 1025 kg/m3. A swimming polar bear climbs onto a piece of floating ice that has a volume of 5.2m3. What is weight of the heaviest bear that the ice can support without sinking complete..
In Mexico, a courageous diver runs horizontally off the edge of a sea side cliff 48.8 m above the sea (about six stories high). Calculate her speed and direction angle of her velocity as she hits the water(or rocks)
A plank 2.00 cm thick and 15.1 cm wide is firmly attached to the railing of a ship by clamps so that the rest of the board extends 2.00 m horizontally over the sea below. find the shear modulus of the wood
When this capacitor is discharged through the strobe lamp, it transfers all its energy in 1.0x10-4 s. Find the power delivered to the lamp
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