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1. Using the deBroglie wavelength of a wrench and a hydrogen atom, show that interference and diffraction effects in matter waves may be neglected at the scale of a macroscopic systems, but that this is not true at the nano - scale.
2. Given the possible improvements in cost of materials, speed and energy efficiency, what are some of the possible benefits and implcations for society from nano - technology?
3. Discuss the possible hazards to the environment, human health, and to society from nano - scaled materials and devices.
A block of wood 34 cm wide and 85 cm tall is placed on a merry-go-round which rotates at 0.95 rad/s. How far from the center may the block be placed before it will tip over?
A meter stick is rotated about the end labelled 0.00 cm, therefore that the other end of the stick moves during an arc length of 8.66cm. Through what arc length s does the 25.0-cm mark on the stick move?
A wave on a string has a speed of 397 m/s. If the tension in the string is 128 N and its length is 1.9 m, what is the mass of the string
A 1050-kg sports car is moving westbound at 15.0 m/s on a levelroad when it collides with a 6320-kg truck driving east on the sameroad at 10.0 m/s. At what speed should the truck have been moving so that it andcar are both stopped in the collision
If you move at 11 m/s toward a 2300 Hertz source that is moving toward you with a ground speed of 36 m/s, compute what frequency do you hear
Calculate the saturation pressure of n-pentane at 90°C by applying the "equal area" rule to the Redlich-Kwong equation.
Light from a laser hits the surface of cesium. With a minimum photon energy of 2.14eV being required to remove photons. When the surface of cesium is illuminated with this light photoelectrons are emitted with a max kinetic energy of 0.76eV. Assum..
A radio station with a power of 20 kW sends out an omnidirectional wave at 1.25 MHz. If the electromagnetic wave has an electric field of 0.22 V/m, what is the magnetic field amplitude
A slab of copper of thickness b is thrust into aparallel-plate capacitor of plate area A and plateseparation d; the slab is exactly halfway between the plates. (a) What is the capacitance after the slabis introduced?
A 2.5 mm diameter copper wire carries a current of 33 A, uniformly distributed across its cross-section. Determine the magnetic field at the surface of the wire
A wire is formed into a circle having a diameter of 10.9 cm and is placed in a uniform magnetic field of 3.17 mT. Find the maximum torque on the wire
A spherical water drop 2.6 ?m in diameter is suspended in calm air due to a downward-directed atmospheric electric field of magnitude E = 3800 N/C. How many excess electrons does it have
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