A point on a wheel of radius 40 cm that is rotating at a constant 5.0 revolutions per second is located 0.20 m from the axis of rotation. What is the acceleration of that point due to the spin of the wheel?
A) 0.050 m/s2
B) 1.4 m/s2
C) 48 m/s2
D) 200 m/s2
E) 0.00 m/s2
Question 2
The wavelength of the emitted photon if an electron in the hydrogen atom makes a transition from the n = 2 state to the ground state is closest to which of the following values?
(c = 3.0 108 m/s, h = 6.626 10-34 J s, 1 eV = 1.60 10-19 J)
A) 122 nm
B) 203 nm
C) 243 nm
D) 389 nm
E) 411 nm
Nancy Rubins, Pleasure Point.
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