Two vectors lying in the xz plane are given by the equations 
and 
. The value of 
class="Wirisformula" align="middle" /> is
A.
B.
C.
D.
E.
Answer: D
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Charge of uniform density 4.0 nC/m is distributed along the x axis from x = ?2.0 m to x = +3.0 m. What is the magnitude of the electric field at the point x = +5.0 m on the x axis?
a. 16 N/C b. 13 N/C c. 19 N/C d. 26 N/C e. 5.0 N/C
What is the photon energy of red light having a wavelength of 6.40 × 102 nm? (c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s)
A) 1.13 × 10-19 J B) 1.31 × 10-19 J C) 3.11 × 10-19 J D) 1.94 × 10-19 J
Consider an open pipe of length L. What are the wavelengths of the three lowest tones produced by this pipe?
A) 4L, 2L, L B) 2L, L, L/2 C) 2L, L, 2L/3 D) 4L, 4L/3, 4L/5
Sublimation is a change of phase from solid to gas without
A) passing through the liquid phase. B) a transfer of energy. C) a change of temperature.