Quiz 1 Review Problems

# 2 hours to the east another car moves with a constant

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One car moves at a constant 50km/hr for 1.2 hours to the east. Another car moves with a constant velocity from the same location at 24m/s for the same time but to the west. How far apart are the two cars after the 1.2 hours? 163,684.8m

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7) A particle of negligible mass and a charge of +2nC travels in a straight line to the right through crossed electric and magnetic fields at a velocity of 4x10 5 m/s. The 0.08T magnetic field points up the paper. What is the magnitude and direction of the electric field? 32,000 N/C, INTO the paper 8) A proton with a mass of 1.67x10 -27 kg and charge 1.6x10 -19 C travels in a straight line to the right through crossed electric and magnetic fields. The magnetic field points into the paper and has a strength of 0.4T. The electric field has a strength of 12,000N/C. What is the velocity of the proton and the direction of the electric field? 30,000m/s, DOWN the paper 9) Continuing from #8, if the electric field is removed leaving only the magnetic field, what will be the radius of the proton’s path and will it move in a clockwise or counterclockwise circle? 7.83x10 -4 m in a counter clockwise circle

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