An electron's position is given by = 4.00tî - 5.00t2 j + 6.00k, with t in seconds and r in meters. (a) In unit-vector notation, what is the electron's velocity v (t)? (Use the following as necessary: t.) v (t) = m/s (b) What is v in unit-vector notation at t = 5.00 s? (t = 5.00) = m/s %3D (c) What is the magnitude of v at t 5.00 s? m/s (d) What angle does v make with the positive direction of the x axis at t = 5.00 s? ° (from the +x axis)

College Physics
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ISBN:9781305952300
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Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
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6.00k, with t in seconds and r in meters.
An electron's position is given by 7 = 4.00tî – 5.00t2 ĵ +
(a) In unit-vector notation, what is the electron's velocity v (t)? (Use the following as necessary: t.)
V (t) =
m/s
(b) What is v in unit-vector notation at t = 5.00 s?
v(t = 5.00) =
m/s
(c) What is the magnitude of v at t = 5.00 s?
m/s
(d) What angle does v make with the positive direction of the x axis at t = 5.00 s?
° (from the +x axis)
Transcribed Image Text:6.00k, with t in seconds and r in meters. An electron's position is given by 7 = 4.00tî – 5.00t2 ĵ + (a) In unit-vector notation, what is the electron's velocity v (t)? (Use the following as necessary: t.) V (t) = m/s (b) What is v in unit-vector notation at t = 5.00 s? v(t = 5.00) = m/s (c) What is the magnitude of v at t = 5.00 s? m/s (d) What angle does v make with the positive direction of the x axis at t = 5.00 s? ° (from the +x axis)
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