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An electron enters a uniform magnet field having a flux density 200uT at a speed of 2x10 6 ms-1 perpendicular to the field. Determine the radius of its orbit, then find the required electric field strength, applied perpendicular to the magnetic field, if the electron is to be continue in a straight line on entering the combined fields, and sketch it?
A small fly of mass 0.27 grams is caught in a spider's web. The web vibrates predominately with a frequency of 4.50 Hertz. What is the value of the effective spring constant stiffness constant for the web.
Consider a homemade capacitor, which consists of 2 8.5" x 11" aluminum foil sheets separated by 10 sheets of paper. Estimate the capacitance of this device. What effect does the paper have on the capacitance
Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.90×10^6 N, one at an angle 17.0 degrees west of north, What is the total work done by the two tugboats on the supertanker
The sun is 24 degrees above the horizon. It makes a 60m long shadow of a tall tree. What is the height of the tree
an arch of 120 degrees carries a total charge of q. the radius of the arch is r ignore the thickness of the wire. what
A baseball pitcher pitches a fastball with a horizontal velocity of 40 m/s. The horizontal distance from the point of release to home plate is 17.50 m. what is the instantaneous linear veloity of the sweet spot at the instant of ball contact
Two small beads with positive charges+4q and+q are fixed atopposite ends of a horizontal insulating rod as shown. A third small charged bead is free to slide along the rod between the fixed charges.
During a car crash a 65kg person's head goes from traveling at 50kmh-1 to stationary in 0.15 s. What is the magnitude of the average net force acting on the head of a person with a 4.5kg head
A bullet with a mass of 4.0 g and a speed of 650 m/s is fired at a block of wood with a mass of 9.7×10?2 kg. What is the speed of the bullet when it exits the block
A meter stick is found to balance at the 49.7-cm mark when placed on a fulcrum. What is the mass of the meter stick
Here's the question: If you have two metal plates 0.50cm apart, and you drop a bit of liquid (mass of 2.6 x 10^-12 g), How many electrons appear on the drop
An interference experimental setup consists of two slits that are separated by 2 micro meter. What is the angle of diffraction for the second order dark fringe
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