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Ernest Rutherford performed experiments on atoms in the early years of the 20th century. Answer the following three questions about Rutherford and his work.
-Describe the Rutherford experiment and what Rutherford and his colleagues saw during the experiment.
-Name and describe the model of the atom that was shown to be inadequate by the Rutherford experiment. Why was this model inadequate?
-Name and describe the model of the atom that was developed to account for the results of the Rutherford experiment. Discuss how the new model explained the new experimental results.
As part of a safety investigation, two 1900 kg cars travelling at 19 m/s are crashed into different barriers. Determine the average forces exerted on (1) car that hits a line of water barrels and takes 1.7 s to stop, and (2) car that hits a concre..
What is the relation between your answers to parts (b) and (c)? Explain why the rule of thumb works. (e) Are the predictions made by the rule of thumb too large or too small? Why?
Three identical freight cars are sitting on the tracks, each separated by a small distance. A fourth car is coasting with velocity 4 m/s. How fast are the four cars moving
How many time constants (a decimal number) must elapse before a capacitor in a series RC circuit is charged to 75.0% of its equilibrium charge
Anelastic conducting material is stretched into a circular loop of15.0 cm radius. It is placed with itsplane perpendicular to a uniform 0.800T magnetic field. What emf is induced in the loop at that instant
Which two particles that make up atoms have about the same mass? Which two have the same magnitude of electric charge? What is an electric current, and what are its units? (Give two equivalent units.)
The inductance of a solenoid with 450 turns and a length of 35 cm is 5.5 mH. What is the cross-sectional area of the solenoid
An object is dropped from rest at a height of 124 m. Find the distance it falls during its final second in the air
An electromagnetic wave with frequency 65.0Hztravels in an insulating magnetic material that has dielectric constant 3.64 and relative permeability 5.18 at this frequency. What is the speed of propagation of the wave
a projectile is fired at angle of theta from the horizontal with an initial velocity of vo. the projectile strikes the
A ball tied to the end of a 0.85 meter long string is twirled in a horizontal circle therefore that the centripetal acceleration acting on the ball is 20 m/s2. Find what is the period of the ball motion
Assuming a uniform field determine the magnitude of the field through cube face.
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