The figure shows two wires that are tied to a 710 g mass that revolves in a horizontal circle at a constant speed of 7.5 m/s. What is the tension in the upper wire?
A) 34 N
B) 20 N
C) 27 N
D) 41 N
Answer: A
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Determine the current in the 10-V emf
a.
2.3 A
b.
2.7 A
c.
1.3 A
d.
0.30 A
e.
2.5 A
Equipotential Surfaces: The equipotential surfaces for two spherical conductors are shown in the figure, with the value of potential marked on the line for each surface.(a) If the distance between points A and B is 2.5 cm what is the approximate intensity of the electric field between these two points?(b) If the distance between points C and D is 2.5 cm what is the approximate intensity of the electric field between these two points?
Fill in the blank(s) with the appropriate word(s).
The condition for interference maxima for a diffraction grating is identical to that for
A) a narrowing single slit. B) a double slit. C) a thin film. D) a wide single slit.
According to the law of Malus, the transmitted intensity of a polarized beam of light passing through a polarizer is unchanged for an angle of 90°
Indicate whether the statement is true or false