Two traveling waves have the forms z1 = A sin(kx - ?t), z2 = A sin(kx + ?t ) Express their superposition in the form of a standing wave
A)
2A cos(kx) cos( ?t )
B)
2A sin(kx) cos( ?t )
C)
2A sin(kx) sin( ?t )
D)
A sin[(kx )2 - (?t )2]
E)
2A cos(kx) sin( ?t )
B
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Addition by 1. Components: Three vectors, src="https://sciemce.com/media/4/ppg__cp1pbb0313192044__f15g1q37g6.jpg" style="vertical-align: -5.0px;" />?-5.50 m2.50 m
A. 5.50 m
B. 13.0 m
C. 11.1 m
D. 7.00 m
E. 2.00 m
, 
, and 
, have the components shown in the table. What is the magnitude of the resultant of these three vectors??x componenty component
?3.50 m-4.50 m
?2.00 m0.00 m
Any object moving relative to Earth will have a Doppler shift when viewed from Earth
Indicate whether the statement is true or false
The magnitude of the Poynting vector of a planar electromagnetic wave has an average value of 0.724 W/m2. What is the maximum value of the magnetic field in the wave?
(c = 3.0 × 108 m/s, ?0 = 4? × 10-7 T • m/A, ?0 = 8.85 × 10-12 C2/N • m2) A) 77.9 nT B) 55.1 nT C) 38.9 nT D) 108 nT E) 156 nT
A capacitor consists of a set of two parallel plates of area A separated by a distance d. This capacitor is connected to a battery that maintains a constant potential difference between the plates
If the separation between the plates is doubled, the magnitude of the charge on the plates will A) double. B) quadruple. C) be cut in half. D) be cut in fourth. E) not change.