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One mole of gallium (6x1023atoms) has a mass of 70 grams, as shown in the periodic table on the inside front cover of the textbook. The density of gallium is 5.9grams/cm3. What is the approximate diameter of a gallium 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.
A pitcher throws a 0.140 KG baseball, and it approaches a bat at 30.0 m/s. The Bat does Wnc=70.0J work on the ball in hitting it. Ignoring air resistance, deterring the speed of the ball after the ball leaves the bat and it has gone 25.0m.
Suppose 79kW is to be transmitted over two 0.105ohms lines. Estimate how much power is saved if the voltage is stepped up from 200V to 2000V and then down again, Estimate how much power is saved
two stationary positive point charges charge 1 of magnitude 3.95nc and charge 2 of magnitude 1.60nc are separated by a
Police radar's effective range is 1.2 km, and your radar detector's range is 2.0km. At what rate must you negatively accelerate to avoid a speeding ticket
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A mirror with a focal length 25 centimeter has a 4 centimeter tall object located 100 centimeter in front of it. Determine what is the height of the image
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What time does it take for each to hit the floor and what are the distances the spheres travel from the edge of the table?
Point charges of 25.0 µC and 49.0 µC are placed 0.500 m apart. What is the magnitude and direction of the electric field halfway between them
What credible cosmological models, besides the Big Bang, are out there, and what are their implications for the age of the Universe
A violin string vibrates at 264 Hz when unfingered. At what frequency will it vibrate if it is fingered one fourth of the way down from the end
Calculate the maximum acceleration and the maximum velocity - calculation of maximum acceleration, maximum velocity and maximum kinetic energy for piston.
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