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The positron is a particle with the same mass as an electron but charge +e. A positron in a bubble chamber moves perpendicular to a 4.5T magnetic field.
If the positron's kinetic energy is 28eV , what's the radius of its trajectory in the bubble chamber?
A proton takes 99.0?s to complete one orbit around a 14.5 m diameter cyclotron.
What's the cyclotron's magnetic field?
A point particle that has a charge of 18.5 µC is located at x = 0, y = 0 and a point particle that has a charge q is located at x = 14.8 cm, y = 0. The electric force on a point particle that has a charge of 7.4 µC at x = 29.6 cm, y = 0 is -(19.7)..
A simple pendulum consists of a bob of mass 1.8kg attached to a string of length of 2.5m. The pendulum is held at an angle of 30 degrees from the vertical by the light horizontal string attached to a wall.
If the value of the linear charge density is ? = 40.5 ?C/m and the distance between the two cables is D = 40.5 m, calculate the electric field midway between the two cables
A wave on a Slinky has a frequency of 1.69 Hz. It takes 4.1 s to travel the length of the Slinky (0.29 m). What is the wavelength.
A copper vat is 12 m long at room temperature (20 degrees Celsius). How much longer is it as it contains boiling water at 1 atm pressure.
A violinist places her finger so that the vibrating section of a 1 g/m string has a length of 40.00 cm, after that she draws her bow across it. A listener nearby in a 20 ^circ {rm C} room hears a note with a wavelength of 30 cm.
A luge and its rider, with a total mass of 104 kg, emerges from a downhill track onto a horizontal straight track with the initial speed of 53 m/s. suppose they stop with the constant deceleration of 2.30 m/s2.
How long after being thrown will the balls collide
An autographed baseball rolls off a 0.64m high desk and strikes the floor 0.61 m away from the desk. How fast was it rolling on the desk before it fell off? The acceleration of gravity is 9.80 m/s^2.
A 50 kg ballet dancer stands on her toes during a performance with four square inches (26.0 cm2) in contact with the floor. What is the pressure exerted by the floor over the area of contact (a) if the dancer is stationary and (b) if dancer is lea..
The end point of a spring vibrates with a period of 1.9 seconds when a mass m is attached to it. When this mass is increased by 9.630×101 kg, the period is found to be 4.1 seconds. Find the value of m.
A 7.00g coin is placed 17.0cm from the center of a turntable. What is the maximum angular velocity with which the turntable can spin without the coin sliding
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