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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
How fast must you project an object for it to reach a height equal to the moon's distance from the earth? Ignore the gravitational attraction of the moon
A body moves with shm and passes two points A and B 56cmapartwith the same velocity,having occupied 2s in passing from A toB. Find the period and amplitude of the oscillation
The amount of heat released when 3.5 grams of steam at 100 degrees Celsius is converted into liquid water at 100 degrees Celsius is __________ J.
One ball of mass 575 g traveling 3.50 m/s to the right collides with another ball of mass 425 g that is initially at rest. What is the velocity of the heavier ball after collision
A particle is acted on by two torques about the origin: τ1 has magnitude 10 N m and pointsin the direction of increasing x, and τ2 has a magnitude of 12N m and points in the direction of decreasing y.
Consider a 10kg mass located at (0,0)-the origin-and a 5kg mass located at (20,0). (Be careful to locate these points in there proper place on the cooridinate system! Distance are in meters.) What would be the magnitude of the gravitational force ..
A steel cable with total length 58 m and mass 110 kg is connected to two poles. The tension in the cable is 2,116 N, and the wind makes the cable vibrate with a frequency of 2 Hz. Compute the wavelength of the resulting wave on the cable.
The resistivity of the body is a good measure of its overall composition. A measure of the resistance of the upper arm is a good way to estimate the percent fat in a person's body. what is the maximum voltage that could be employed
A 76 kgbicyclist rides his 10.3 kg bicyclewith a speed of 15.3 m/s. What is the magnitude of the braking force
You sing into a well and find that the well resonates at frequencies of 176 Hz and 208 Hz with no resonances between these two frequencies. What is the frequency of the fundamental mode?
A roller-coaster car has a mass of 506 kg when fully loaded with passengers. What is the maximum speed the vehicle can have
In an electron-beam heater, electrons at rest near a tungsten filament are accelerated toward a metal target at a high electrostatic potential. find the potential difference between the target and the filament
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