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Question: Show that R = and then redo Example.
Example: If electrons accelerate from rest through 200V, they acquire a kinetic energy of 200eV. Assume that a beam of these electrons enters a region of uniform magnetic field of B = 5mT. If the beam enters perpendicular to B, what is its radius of curvature?
First, find the velocity of the electron.
F = qvB sinΘ
Compute where should you put a third mass M therefore that the net gravitational force on M due to the two masses is exactly zero
A 350g object on a frictionless, horizontal lab table is pushed against a spring of force constant 40.0N/cm, How fast is the object moving when it has gained half of the spring's original stored energy
The length of a simple pendulum is 0.70 m and the mass of the particle (the "bob") at the end of the cable is 0.24 kg. Using the position of the bob at its lowest point as the reference level, determine the total mechanical energy of the pendulum as..
A bat can detect very small objects, such as an insect whose length is about equal to one wavelength of the sound the bat makes. If a bat emits chirps at a frequency of 61.0 kHz, and if the speed of sound in air is339 m/s, what is the smallest insect..
Two small conducting spheres by radii a and b are imbedded in a medium of resistivity ρ and permittivity ε with their enters separated by a distance d>>a,b. What is the resistance R among them
You place a 3.63-mm-high diamond on the axis of and 12.7 cm from a lens with focal length -5.15 cm. How high is the image
In preperation for building a space station, an astronaut removes a self-teliscoping uniform rod form the cargo bay and releases it, What is the angular speed after the catch slips
A steel rod of mass m and length L has the linear expansion coefficient X. It is standing vertically and supports a box of mass M on its top. what is the heat capacity of the rod for this process
An alpha particle (helium nucleus) moves in a particle accelerator where the potential difference is 2.5 MV. If it starts from rest, obtain the final speed of the alpha particle
A mass is accelerating when it is seen doing what? Now that we know the newton's law, what can beinfered about mass which is accelerating? How can you explain why your car stops quicker when tires continue rotating during braking?
The container is slightly heated, and the alcohol column is observed to move along the linear section of the tube. If the temperature of the air in the container was originally 23 Celsius, then if the temperature increases by .36 Celsius how far w..
Suppose that workers involved in manufacturing are paid less than all other workers in the economy. What would be the effect on the real income distributionwithin the economy if there were a substantial tariff levied on manufactured goods?
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