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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 ball swings in a vertical circle at the end of a rope 1.40 m long. When the ball is 36.3° past the lowest point on its way up, Determine the magnitude of its radial acceleration
A 70 kg bicyclist rides his 7.8 kg bicycle with a speed of 16 m/s. How much work must be done by the brakes to bring the bike and rider to a stop.
An uncharged capacitor is connected to a 55 V battery until it is fully charged, after which it is disconnected from the battery. A slab of paraffin is then inserted between the plates.
To measure the speed of light, Fizeau used a rotating disk with equally spaced holes during which light could pass. Light was directed at the rotating disk, passed during one of the holes, bounced from a distant mirror, and then the angular speed of ..
Identical objects are located at the same distance from two spherical mirrors, A and B. Find the ratio fA/fB of the focal lengths of the mirrors
A 1.7kg , 20-cm-diameter turntable rotates at 50rpm on frictionless bearings, What is the turntable's angular velocity, in rpm, just after this event
Three identical train cars, coupled together, are rolling eastat 2 m/s. A fourth car traveling east at 4 m/s catchesup with the three and couples to make a four-car train. What is the speed of the five-car train
A wheel with a rotational inertia of 5.0 kg m2 is rotating in a horizontal plane at 600 rev/min. A rim brake exerts a torque of 500 Nm on the inside rim of the wheel. Discover the initial angular velocity in units of rad/s and the number of revolutio..
A ball of mass 0.65 kg is fired with velocity 120 m/s into the barrel of a spring gun of mass 2.4 kg initially at rest on a frictionless surface. What fraction of the ball's initial kinetic energy is stored in the spring
A 0.027 kilogram bullet is fired vertically at 235 m/s into a 0.15 kilogram baseball that is initially at rest. Find how high does the combined bullet and baseball rise after the collision
Your average speed on the first half of a car trip is 75.0 km/h. How fast do you have to drive on the second half of the trip to achieve an average speed of 83.0 km/h for the whole trip
at three corners of a rectangle length 11.8 cm height 5.9 cm the following charges are located q1 upper left corner q2
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