A point charge with a mass of 1.81 ng and a charge of +1.22 ?C moves...

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Physics

A point charge with a mass of 1.81 ng and a charge of +1.22 ?Cmoves in the x-y plane with a velocity of 3.00 x104 m/s in a direction 15Â° above the +x-axis. At timet=0, the point charge enters a uniform magnetic field ofstrength 1.25 T that points in the +x-direction.Assumethat the point charge remains immersed in the uniform magneticfield after time t=0.
a) What is the magnitude and direction of the magnetic forcethat the magnetic field exerts on the point charge at timet=0?
b) How does the x-component of the chargeâ€™s initialvelocity effect the motion of this point charge as it moves throughthe uniform magnetic field? Does its magnitude change? Does itsdirection change? Explain your reasoning.
c) How does the y-component of the chargeâ€™s initialvelocity effect the motion of this point charge as it moves throughthe uniform magnetic field? Does its magnitude change? Does itsdirection change? Explain your reasoning.
d) Use your answers from parts 1b & 1c to explain why thepath of this point charge is helical (corkscrew-shaped). Explainyour reasoning.
e) Determine the radius of the circular part of the pointchargeâ€™s helical path.

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4.3 Ratings (766 Votes)

given m 181 ng 181109 g q 122 micro C v 300104 ms theta 15 degrees B 125 T a F qvBsintheta here theta is the angle between v and B 1221063104125sin15 00118 N direction towards z axis b See Answer

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