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An electron follows a helical path in a uniform magnetic field given by B→= (19 î...

An electron follows a helical path in a uniform magnetic field given by B→= (19 î - 59ĵ - 27k̂) mT. At time t = 0, the electron's velocity is given by v→ = (22î - 24ĵ + 53k̂) m/s. (a) What is the angle φ between v→ and B→? The electron's velocity changes with time. (b) Do its speed changes with time? (c) Do its angle φ changes with time? (d) What is the radius of the helical path?

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