Lens-Maker Formula: A double-convex thin glass lens has equal-magnitude radii of curvature. The focal length of the lens is +37.3 cm and the index of refraction of the glass is 1.52. What is the magnitude of the radius of curvature of each convex surface?
A. 39 cm
B. 35 cm
C. 31 cm
D. 43 cm
E. 46 cm
Answer: A
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Kirchhoff's Rules: For the circuit shown in the figure, R1 = 50 ?, R2 = 20 ?, R3 = 35 ?, R4 = 10 ?, R5 = 68 ?, I1 = 0.111 A, I2 = 0.142 A, and the batteries are ideal.(a) Determine V1 and V2.(b) What is the potential difference across R4?
What will be an ideal response?
A projectile is projected from the origin with a velocity of 25.0 m/s at an angle of 50.0 degrees above the horizontal. What is the time of maximum height of the projectile?
A. 1.95 s B. 2.03 s C. 2.67 s D. 3.01 s E. 3.45 s
The point P lies along the perpendicular bisector of the line connecting two long straight wires S and T that are perpendicular to the page. A set of directions A through H is shown next to the diagram. When the two equal currents in the wires are directed up out of the page, the direction of the magnetic field at P is closest to the direction of
A. E. B. F. C. G. D. H. E. A
The magnetic quantum number m1 can have any integer value ranging from
A) -n to +n. B) -? to +?. C) 0 to n. D) 0 to ?. E) 0 to (n-1)