A duck flying due east passes over Atlanta,
where the magnetic field of the Earth is
5.5e−5 T directed north. The duck has a
positive charge of 4.0e−8 C.
If the magnetic force acting on the duck is
4.80e −11 N upward, what is the magnitude
of the duck’s velocity?
where the magnetic field of the Earth is
5.5e−5 T directed north. The duck has a
positive charge of 4.0e−8 C.
If the magnetic force acting on the duck is
4.80e −11 N upward, what is the magnitude
of the duck’s velocity?
-
It should be determinable by F = q*v*B
F = 4.8*10^-11 N
q = 4*10^-8 C
v = ???
B = 5.5 *10^-5
4.8*10^-11 = 4 *10^-8 * v * B 5.5 *10^-5 It's pretty big.
4.8*10^-11 = 2.2 * 10^ - 12 v
22 m/s = v
F = 4.8*10^-11 N
q = 4*10^-8 C
v = ???
B = 5.5 *10^-5
4.8*10^-11 = 4 *10^-8 * v * B 5.5 *10^-5 It's pretty big.
4.8*10^-11 = 2.2 * 10^ - 12 v
22 m/s = v
-
F = qvBsin θ
⇒ v = F/(qBsin θ)
= (4.80×10-11 N)/[(4.0×10^-8 C)(5.5×10^-5 T)(sin 90°)]
≈ 21.8182
≈ 22 m/s
⇒ v = F/(qBsin θ)
= (4.80×10-11 N)/[(4.0×10^-8 C)(5.5×10^-5 T)(sin 90°)]
≈ 21.8182
≈ 22 m/s