Force on a Moving Charge: A negatively-charged particle moves across a constant uniform magnetic field that is perpendicular to the velocity of the particle. The magnetic force on this particle
A. causes the particle to speed up.
B. causes the particle to slow down.
C. causes the particle to accelerate.
D. is in the same direction as the particle's velocity.
E. is opposite the direction of the particle's velocity.
Answer: C
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A 1 500-kg car rounds an unbanked curve with a radius of 52 m at a speed of 12.0 m/s. What minimum coefficient of friction must exist between the road and tires to prevent the car from slipping? (g = 9.8 m/s2)
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The cork in a bottle is 2.00 cm in diameter. If the pressure inside the bottle is 3.00 atm, then the net force on the cork due to the pressure difference is
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