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Q1. What must the charge (sign and magnitude) of a particle of mass 1.47 g be for it to remain stationary when placed in a downward-directed electric field of magnitude 700 N/C?
Use 9.81 m/s^2 for the magnitude of the acceleration due to gravity.
Q2. What is the magnitude of an electric field in which the electric force on a proton is equal in magnitude to its weight?
Use 1.67×10-27 kg for the mass of a proton, 1.60×10-19 C for the magnitude of the charge on an electron, and 9.81 m/s^2 for the magnitude of the acceleration due to gravity.
a modern sculpture has a large horizontal spring with a spring constant of 276 nm that is attached to a 56.0-kg piece
A 4.0 kg mass is connected by a light cord to a 3.0kg mass ona smooth surface. The pulley rotates about a frictionlessaxle and has a moment of inertia of 0.5kg m^2 and a radius of.30m. Assuming that the cord does not slip on the pulley,
In an eye that is farsighted, the eye focuses parallel rays so that the image would form behind the retina. In an eye that is nearsighted, the image is formed in front of the retina.
Two charged dust particles exert a force of 4.20 x 10^-2 N on each other. What would be the force if they are moved so they are only one-eight as far apart.
If the ball was hit when it was 1.2m above the ground, what horizontal distance does it travel before it lands on the building
A circular loop of wire with 10 turns, radius 0.241 m and resistance 0.235 Ohms is connected to a 13.1 V power supply. find The magnetic field at the center of this loop
an electron acquires 7.95times10-16j of kinetic energy when it is accelerated by an electric field from plate a to
2 hollow conducting cylindrical shells (radius of 1 cm and 2 cm). The inner cylinder carries a current of 5 A outwards. what is the magnitude of the magnetic field at radius of 2.5 cm
a train has a mass of 5.86e6 kg and is moving at 57.7 kmhr. the engineer applies the brakes which results in a net
an electron is fired directly toward the center of a large metal plate that has excess negative charge with surface
A sample of helium-4 behaves as an ideal gas as it isheated at constant pressure from 294 K to 404 K. what is the mass of helium present
a 40 figure skater is spinning on the toes of her skates at 0.60 . her arms are outstretched as far as they will go. in
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