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An electron is accelerated from rest by a potential difference V. It then enters a uniform magnetic field of magnitude B with its velocity perpendicular to the field.
(a) Calculate the speed of the electron and
(b) Find the radius of its path in the magnetic field. State your answers in terms of the given variables, using me for the mass of an electron and e for the elementary charge when needed.
A 35-kg box is pulled with a 55-N force at 38 degrees above the horizonal surface. what is the net work done on the box
The electric field on the surface of a 11 cm diameter sphere is perpendicular to the sphere and has a magnitude 51 kN/C. What is the electric flux through the sphere
an airplane flies 200 km due west from city a to city b and then 285 km in the direction of 32.5deg north of west from
In this section assume the sound speed in air is 343 m/s . A goose flying toward you at 11.3 m/s emits a squawk, which you hear at 246 Hz . Find the wavelength of the sound you hear
A golf ball is struck at ground level. The speed of the golf ball as a function of time is shown in the figure below, where t = 0 at the instant the ball is struck. What is the maximum height above the ground level attained by the ball
The coefficient of kinetic friction between a refrigerator (mass 100kg) and the floor is 0.20, and the coefficient of static friction is 0.25. If you apply the minimum force needed to get the refrigerator to move, what will the acceleration be?
A proton moves through a magnetic field at 36.9% of the speed of light. At a location where the field has a magnitude of 0.00629 T and the proton\'s velocity makes an angle of 141° with the field, what is the magnitude of the magnetic force acting on..
Two sets of Christmas lights are available. For set A, when one bulb is removed, the remaining bulbs remain illuminated. Explain the difference in wiring for the two sets
A warehouse workerpushes a crate along the floor by a force of 29.0 N that points downward at an angle of 50.0^\circ below the horizontal. Find the vertical component of theforce
A 0.61-kilogram metal sphere oscillates at the end of a vertical spring. what is the spring constant of the spring
A cylinder containing an ideal gas has a volume of 2.0m3 and a pressure of 1.0 x 105 Pa at a temperature of 300K. The cylinder is places against a metal block that is maintained at 900 k and the gas expands as the pressure remains constant until t..
What is the pressure amplitude of a sound wave with an intensity level of 121.5 dB in air
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