A 60-?C charge is held fixed at the origin and a ?20-?C charge is held fixed on the x axis at a point x = 1.0 m. If a 10-?C charge is released from rest at a point x = 40 cm, what is its kinetic energy the instant it passes the point x = 70 cm?
a. 9.8 J
b. 7.8 J
c. 8.8 J
d. 6.9 J
e. 2.8 J
c
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If you see a rainbow near the time of sunset, where in the sky will the rainbow be?
a. overhead b. toward the eastern horizon c. toward the western horizon d. toward the northern horizon e. toward the southern horizon
The exchange particle that mediates the strong interaction is the
A. gluon. B. photon. C. graviton. D. neutrino.
Calculate the pressure amplitude (in N/m2) of a 500 Hz sound wave in helium if the displacement amplitude is equal to 5.0 × 10^?8 m. (? = 0.179 kg/m3, v = 972 m/s.)
a. 3.5 × 10^?2 b. 1.6 × 10^?2 c. 2.7 × 10^?2 d. 4.2 × 10^?2 e. 2.0 × 10^?2
In a double-slit experiment using light of wavelength 486 nm, the slit spacing is 0.600 mm and the screen is 2.00 m from the slits. Find the distance along the screen between adjacent bright fringes