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1. Thomson himself was perhaps the biggest critic of the model referred to as "plum pudding." He tried for years to make it work. What experimental data could he not predict? Why couldn't he make the planetary model of Rutherford-Bohr work?
2. Does it seem fortuitous that most of the successful physicists who helped unravel the secrets of atomic structure (Thomson, Rutherford, Bohr, Geiger, and Moseley) worked either together or in close proximity in England? Why do you suppose we don't hear names of physicists working on this idea in other European countries or in the United States?
3. Could the Rutherford scattering of a particles past 90° be due to scattering from electrons collected to- gether (say, 100 e-) in one place over a volume of diameter 10-15 m? Explain.
The average intensity of light emerging from a polarizing sheet is 0.707 W/m2, Find the angle that transmission axis of polarizing sheet makes with the horizontal
When a box rests on a round sheet of wood on the ground, it exerts an average pressure p on the wood. bwhat is the new average pressure
If the density and atomic mass of copper are respectively 8.80 103 kg/m3 and 63.5 kg/kmol, Determine the drift speed of the electrons in a 10 gauge copper wire (2.588 mm in diameter) carrying a 19.5 A current
Problem A small mirror is attached to a vertical wall, and it hangs a distance of 1.59 m above the floor. The mirror is facing due east, and a ray of sunlight strikes the mirror early in the morning and then again later in the morning.
A ball which diameter is 1.6 centimeter rolls down an incline and its center moves with a linear acceleration of 3.3 m/s2. Find what is the angular speed of the ball if it rolls for 1.5 s from rest
For a series RLC circuit with resistance 5 KOhm, capacitance 100 picoFarad, and inductance 0.025 Henry, what are the natural and the free oscillation mode frequencies
A spring hanging from the ceiling has an unstretched length of 80cm. What is the amplitude of the resulting oscillation
A magnetic field of 3 Tesla is oriented into the page. A 10 cm long conducting bar is pulled to the right at a constant speed of 3.4 m/s. What is the magnitude of the current in the bar
Sea birds tuck in their wings and dive straight down into the water when hunting for fish near the surface. If a pelican starts a dive from 16.0 m, with what speed will it strike the water
A plane traveling at 200.0 km/h attempts to land on a 250 m runway. The plane's engines and brakes accelerate uniformly at -7.0 m/s2. Will the plane be able to land safely
A chair of mass 10.5 kg is sitting on the horizontal floor; the floor is not frictionless. You push on the chair with a force F = 44.0 N, calculate the normal force that the floor exerts on the chair
A 4.80-kg watermelon is dropped from rest from the roof of a 22.0-m -tall building and feels no appreciable air resistance. Just before it strikes the ground, what is the watermelon's speed?
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