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Consider a magnetic force acting on an electric charge in a uniform magnetic field. Which of the following statements are true? The direction of the magnetic force acting on a moving electric charge in a magnetic field is perpendicular to the direction of motion. The direction of the magnetic force acting on a moving charge in a magnetic field is perpendicular to the direction of the magnetic field. An electric charge moving perpendicular to a magnetic field experiences a magnetic force. A magnetic force is exerted on an electric charge moving through a uniform magnetic field. A magnetic force is exerted on a stationary electric charge in a uniform magnetic field. An electric charge moving parallel to a magnetic field experiences a magnetic force.
on a hot summer day the temperature of air in arizona reaches 113degf. what is the speed of sound in air at this
A converging lens has a focal length of f = 43 cm for blue light and f = 53 cm for red light. An object is placed 140 cm in front of the lens and is illuminated with white light. How far apart are the two images
A refrigerator has a coefficient of performace of 2.10. In each cycle it absorbs 20000J of heat from th ecold reservoir. how much heat is discarded to the high-temperature reservoir
A cart loaded with bricks has a total mass of 21.2 kg and is pulled at constant speed by a rope. The rope is inclined at 27.2 ? above the horizontal and the cart moves 27.1 m on a horizontal floor. The coefficient of kinetic friction between groun..
A diving board of length 3.00m is supported at a point 1m from the end, and a diver weighing 520 m stands at the free end . The diving board is of uniform cross section and weighs 270m.
A simple harmonic wave of amplitude 5.0cm, wavelength 70cm, What's the wave energy per unit length of the wire
The range of human hearing is roughly from twenty hertz to twenty kilohertz. what are the lengths of the longest and shortest pipes
the mass of a star is 1.71middot1031 kg and it performs one rotation in 34.1 days. find its new period in days if the
each tire on a car has a radius of 0.330 m and is rotating with an angular speed of 15.5 revolutionss. find the linear
A 22 gauge NiAg wire is 22.5 km long. The resistivity of the NiAg wire is 33.0*10^-8 Ohm*m. The cross sectional area of the wire is 3.22*10^-7. How much energy is dissipated in a day
If she is served 200 of coffee at 84 in a well-insulated container, how much ice at 0 should she add to obtain a final temperature of 31.
A 2,493-kg car is moving down a road with a slope (grade) of 14% at a constant speed of 13 m/s. compute the direction and magnitude of the frictional force
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