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One mole of cadmium (61023 atoms) has a mass of 112 grams, as shown in the periodic table on the inside front cover of the textbook. The density of cadmium is 8.65 grams/cm3. What is the approximate diameter of a cadmium atom (length of a bond) in a solid block of the material? Make the simplifying assumption that the atoms are arranged in a "cubic" array, as shown in the figure. Remember to convert to SI units.
d = m
Two balls with same mass m1 and m2 are moving in a straight line by velocity v1 and v2 with respect to the ground. They then collide elastically with each other. That is, the total momentum and the total kinetic energy of the two balls are conserved ..
On December 27, 2004, astronomers observed the greatest flash of light ever recorded from outside the solar system. what was the average power output (in terms of P) of this magnetar
A 2.20 kg bucket containing 10.0 kg of water is hanging from a vertical ideal spring of force constant120 N/m and oscillating up, What is the shortest period this system can have
A solid conducting sphere (radius=.05) has a charge of 0.25nC distributed uniformly on its surface. If point A is located at the center of the sphere and point B is 15cm from the center, what is the magnitude of the electric potential difference bet..
A 6-kg bucket of water is being pulled straight up by a string at a constant speed. What is the tension in the rope
You are traveling in a spaceship at a speed of 0.56c away from Earth. You send a laser beam toward Earth traveling at velocity relative to you. What do observers on the Earth gauge for the speed of the laser beam?
In the Davisson-Germer Experiment, what will be Bragg Scattering angle Φ (first order) for an electrons? beam when scattered / diffracted from the surface of Ni-crystal with atomic- planes spacing D = 0.215 nm and the kinetic energy of the e-beam ..
Two small metallic spheres, each of mass m = 0.212 g, are suspended as pendulums by light strings of length L as shown in the figure below. The spheres are given the same electric charge of 7.9 nC, and they come to equilibrium when each string is ..
given that the earth rotates once per day about an axis passing through the north and south poles an axis that is
A 10-cm-diameter parallel-plate capacitor has a 1.0 mm spacing. The electric field between the plates is increasing at the rate 1.5x106V/ms. What is the magnetic field strength on the axis?
An AM radio station broadcasts an electromagnetic wave with a frequency of 915 kHz, How many AM photons are needed to have a total energy equal to that of one FM photon
A penny sits 20 cm from the axis on an old record, which is spinning at 45 rpm. find the coefficient of friction between the penny and the record
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