Find the equivalent capacitance in the following figure. What is the total charge? Also find the charge and voltage on 1µF and 8 µF capacitors.    

In a double-slit experiment the distance between slits is 4.1 mm and the slits are 1.0 m from the screen. Two interference patterns can be seen on the screen: one due to light of wavelength 470 nm, and the other due to light of wavelength 640 nm. What is the separation in meters on the screen between the m = 3 bright fringes of the two interference patterns?

The coefficient of linear expansion of steel is 11×10–6 per C°. A steel ball has a volume of exactly 100 cm3 at 0° When heated to 90°C, what is the new volume? 

A coil consists of 200 turns of wire. Each turn is a square of side d =18 cm, and a uniform magnetic field directed perpendicular to the plane of the coil is turned on. If the field changes linearly from 0 to 0.50 T in 0.80 s, what is the magnitude of the induced emf in the coil while the field is changing?

Two equal charges (Q = + 1.00 nC) are situated at the diagonal corners A and B of a square of side 1.0 m. What is the magnitude of the electric field at point D? (C and D are the another diagonal corners).The Coulomb constant is k = 9.0×109 N×m2/C2. 

a. What is dispersion of light? Why does it happen? (4 pts) b. A laser beam travels through an unknown transparent material. When it reaches a boundary with air, the angle of reflection is 30.0°, and the angle of refraction is 45.0°. (c=3×108 m/s)(a) What is the index of refraction of the material?(b) What is the speed of light in the material?(c) What is the critical angle for total internal reflection? (6 pts)

a. A bar magnet is moved toward a coil of wire. According to Lenz’s Law, in which direction will the induced current flow, and why? (4 pts) b. A coil consists of 120 turns of wire. Each turn is a rectangle with length 25 cm and width 10 cm. A uniform magnetic field, directed perpendicular to the plane of the coil, increases linearly from 0 to 0.60 T in 0.40 s. Find the induced emf. (6 pts)  

Which of the following methods is not used to study the level of RNA synthesis in a sample of cells at the genomic level?

Let’s suppose that fitness depends on the relative numbers of individuals with a given genotype. The B allele is dominant to the b allele. If the percentage of individuals with the BB or Bb genotype is very low, the fitness values of the BB or Bb genotypes are higher than the bb genotype. In contrast, when the percentage of individuals with the bb genotype is very low, the fitness of the bb genotype is the highest.  This is an example of

a. An erect object is located between a concave mirror and its focal point. Describe the nature of the image. (4 pts) b. An object is placed 20.0 cm in front of a lens. The image formed is upright and 2× larger than the object. Find the image distance first. Then calculate the focal length. Identify the lens. (6 pts)