1. A circuit is constructed with an ideal battery and four identical lightbulbs (A, B, C, and D) and shown in the figure. Rank the brightness of the four light bulbs from brightest to least bright. Explain your reasoning in the space provided: 2. If the battery connected to the circuit above has an emf of 15V, and each bulb (A , B, C, D) has resistance of 6.4\Omega what is the current through each bulb?

Which of the following is not the unit for electrical conductivity? Select one: O (0-m) - 1 O N-m O (N-mm) -1 O S/m

1. Do the polarities of the sources in Figure 7.1 matter as to the resulting voltages? Will the magnitudes of the voltages be the same if one or both sources have an inverted polarity?

Observation Point Figure 2. The geometry of the problem 3 In Figure 2, the constant charge density distribution po (C/m2) is defined on the surface located at x - y plane. In the question, the parts of a ring are given. Here, a is the inner radius and b is the outer radius. Dielectric permittivity of the space is ep. Hint: The ring pieces are located at x- y plane and each of them is scanning 20, angle in the space. a) Find the electric field at an any point located at (0,0,2). Do not forget that Electric Field is a vector.) b) By taking the limit cases, find the electric field at the same point (0,0,2) for the following figures. In the following figures, the top views are given. No need to show all steps, just give the final answers. Hint: No need to do everything from beginning. Just try to take the limits or change the boundaries of the integral. c) Verify the last figure (infinite Sheet) with Gauss' Law. i. ii. ii. iv. Ring Shape Disk Shape Bow - Tie Shape Infinite Sheet 00

A 4.0-nm-diameter protein is in a 0.050 M KCl solution at 25° C. The protein has 9 positive and 20 negative charges. Model the protein as a sphere with a uniform surface charge density. Part A What is the electric potential of the protein at the surface? Express your answer with the appropriate units. μA ? Vsurface = Value Units Submit Request Answer Part B What is the electric potential of the protein 2.0 nm from the surface? Express your answer with the appropriate units. με V2 nm = Value Units Submit Request Answer

Given the following scene on the stage Player #1 Player #3 Diameter 1meter Diameter 2meters Player #2 High 2m Width 1m All spotlights are place at 15 meters from the stage. You want to produce a circle of light of 2meters diameter with the SPOTLIGHT#1 on the Player #1, a rectangle of light of 2m by Im with the SPOTLIGHT #2 on the Player #2 and a circle of light of Imeter diameter with the SPOTLIGHT#3 on the Player #3

1- The electric field lines (solid) and the equipotential lines (dashed) in a certain region of space are as shown here. Compare the electrical potential value of point C with other points?

In the circuit to the right B1, B2 and B3 are identical light bulbs. The internal resistance of the battery can be ignored. Which statement is true regarding the relative brightness of the bulbs? B, The three bulbs glow with the same brightness. B, and B3 glow with the same brightness but brighter B2 i. ii. 8) than B1. B3 iii. B2 and B, glow with the same brightness but less brightly than B1. iv. B1 glows brighter than B2 while B2 in turn glows brighter than B3.

The image above represents a standing wave in a string with two fixed ends. The standing wave is produced by a vibrator at one end that is vibrating with a frequency of 34.5 Hz. What is The number of nodes? 6 The number of antinodes? 5 Units are required in all entries below. If the length of the string L = 0.900 m, what is the wavelength À of this standing wave? A = 0.36 m Based on the frequency of the vibrator, what is the fundamental frequency of oscillation f, for this string? f1 = 1.65 Hz What is the wave speed v? v = 2.971 m/s If the total mass hanging on one end of the string that creates the tension in the string is 0.550 kg, what is the mass density (mass per unit length) u of the string? u = 0.6111 kg/m The hanging mass is NOT the mass of the string.

You are given a number of 32 Q resistors, each capable of dissipating only 1.8 W without being destroyed. What is the minimum number of such resistors that you need to combine in series or in parallel to make a 32 Q resistance that is capable of dissipating at least 14.0 W? Number i Units