In a hydrogen atom, the electron makes a transition from the n = 8 to the n = 3 state. The wavelength of the emitted photon is closest to which one of the following values? (c = 3.00 × 108 m/s, 1 eV = 1.60 × 10-19 J, h = 6.626 × 10-34 J ? s)
A) 9.57 × 10-7 m
B) 1.13 × 10-6 m
C) 3.12 × 10-7 m
D) 4.52 × 10-6 m
E) 6.34 × 10-7 m
A
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A skater is using very low-friction rollerblades. A friend throws a Frisbee at her, on the straight line along which she is coasting. Describe the following event as an elastic, an inelastic, or a perfectly inelastic collision between the skater and the Frisbee. She tries to catch the Frisbee, but it bounces off her hands and falls to the ground in front of her
1.elastic 2.inelastic 3.perfectly inelastic
Sound waves are
A. transverse waves B. longitudinal waves
When a switch is closed to complete a DC series RL circuit,
A. the electric field in the wires increases to a maximum value. B. the magnetic field outside the wires increases to a maximum value. C. the rate of change of the electric and magnetic fields is greatest at the instant when the switch is closed. D. all of the above are true. E. only (a) and (c) above are true.
It takes the Pluto-Charon system ________ to rotate around its common center of mass
Fill in the blank(s) with correct word