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A narrow beam containing 2000 mono energetic photons is reduced to 1000 photons with a slab of copper 10-2 m thick. What is the total linear attenuation coefficient of the copper slab for these photons? If the thickness of the copper slab doubled, does it affect the total linear attenuation coefficient? Prove it quantitatively
A major motor company displays a die-cast model of its first automobile, made from 6.60 kg of iron. What mass of gold is needed to make the new model
To measure the static friction coefficient between a 2.2-kg block and a vertical wall, the setup shown in the drawing is used. What is the coefficient of static friction
A coin slides over a frictionless plane and across a xy coordinate system from the origin to a point with xy coordinates (3.0 m, 4.5 m) while a constant force acts on it. Find how much work is done by the force on the coin during the displacement
Uranium has two naturally occurring isotopes. U238 (atomic mass 238.0508 u) has a natural abundance of 99.275% and U235 (atomic mass 235.0439 u) has an abundance of 0.720%.
the internal energy of the gas in a gasoline engines cylinder decreases by 205.1 J. if 65.0 J of work is done by the gas, how much energy is transferred as heat
gear a with a mass of 1.75 kg and a radius of 55.0 cm is in contact with gear b with a mass of 0.875 kg and a radius of
Tarzan swings from a vine to grab Jane. If Tarzan's mass is 100 kg and he is traveling at 4 m/s when they collide, determine their speed as they swing away. Jane's mass is 50 kg
A satellite moves in a circular orbit around Earth at a speed of 5047 m/s. Determine the satellite's altitude above the surface of Earth
A single loop of wire with a resistance of .3? and with a radius of 10 cm is laid flat in a magnetic field of 1.2 T out of the page. What is the induced current while its moving
what speed does the rock have as it strikes the ground?
Let us model the electrical behavior of such a molecule by a pair of +/- 1.60x10^-19 -C charges connected by a spring with force constant= 2.05x10^-4 N/m. What is the magnitude of the induced electric dipole moment
A small sphere of mass m = 6.60 g and charge q1 = 32.4 nC is attached to the end of a string and hangs vertically as in the figure. A second charge of equal mass and charge q2 = ?58.0 nC is located below the first charge a distance d = 2.00 cm below ..
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