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A velocity selector has an electric field of magnitude 2620 N/C,directed vertically upward, and a horizontal magnetic field that isdirected south. Charged particles, traveling east at a speed of6.75 x 103 m/s, enter the velocity selector and are ableto pass completely through without being deflected. When a different particle with an electric charge of +3.30 x10-12 C enters the velocity selector traveling east, thenet force (due to the electric and magnetic fields) acting on it is2.20 x 10-9 N, pointing directly upward. What is the speed of this particle?
a person of mass 50 kg has a wavelength of 4.42 x 10^-36 m when running. how fast is she running
A beam of 16MeV deuterons (m=2mp) from a cyclotron falls on a copper block. The beam is equivalent to a current of 15 microA. At what rate is thermal energy produced in the block
A distant quasar is found to be moving away from the earth at 0.90 c. What is the recessional speed of the quasar as measured by astronomers in the other galaxy
acA block lies on a plane which is inclined at 22 deg to thehorizontal. The coefficient of kinetic friction between blockand plane is %u03BCk = 0.17. compute the acceleration of the block
An explorer is caught in a whiteout (in which the snowfall is so thick that the ground cannot be distinguished from the sky) while returning to base camp. He was supposed to travel due north for 44 km, but when the snow clears, he discovers that h..
A 90.6-kg climber is scaling the vertical wall of a mountain. His safety rope is made of a material that, How much is the rope stretched when it breaks his fall and momentarily brings him to rest
A fuzzy die (m = 0.2 kg) hangs from the ceiling of a car
a 50.0 cm open-open tube 6.0 cm in diameter has a measured f1= 304 Hz. calculate the end correction constant from these data.
A car moving at a constant speed of 7.5 m/s, moves 25 m at a 20 degree angle above horizontal. How much time does it take the car to accomplish this movement
A ball rolls from rest down a roof without slipping. the roof has pitch of 30 degree until there is a flat, horizontal section near the edge of the roof. what was its angular momentum when it left the roof
Your sofa won't fit through the door of your new sixth-floor apartment, so you use a 1.08kW motor to lift the 84.4kg sofa 15.6m from the street. How much time does the lift take
Two small metallic spheres, each of mass m = 0.198 g, are suspended as pendulums by light strings of length L as shown in the figure below. The spheres are given the same electric charge of 7.4 nC, and they come to equilibrium when each string is ..
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