What is the wavelength of a photon having the same momentum as an electron that is traveling at 7.5 km/s?
(h = 6.626 × 10-34 J ? s, melectron = 9.11 × 10-31 kg)
97 nm
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RLC Circuits: What is the phase angle between the voltages of the inductor and capacitor in a RLC series circuit?
A. 0° B. 45° C. 90° D. 180° E. 270°
A charge Q is placed on the x axis at x = +4.0 m. A second charge q is located at the origin. If Q = +75 nC and q = ?8.0 nC, what is the magnitude of the electric field on the y axis at y = +3.0 m?
a. 19 N/C b. 23 N/C c. 32 N/C d. 35 N/C e. 21 N/C
Comets are composed of ______________
a. dust and ice b. rock c. helium d. lead e. iron
A single-slit diffraction pattern is produced from a light source of wavelength 580 nm. The light goes through a single slit and onto a screen 1.0 m away. The first dark fringe is 5.8 mm from the central bright fringe. What is the slit width? (1 nm = 10-9 m)
a. 0.12 mm c. 0.081 mm b. 0.24 mm d. 0.10 mm