QUESTION

# 02/04/2016 MasteringPhysics: Assignment 5 Exercise 34.41 Part A Find the location and height of the image (call it ) formed by the lens with a focal...

1. You connect a battery, resistor, and capacitor as in (Figure 1) , where E = 46.0 V , C = 5.00 μF , and R = 110 Ω . The switch S is closed at t = 0.

Part A

When the voltage across the capacitor is 8.00 V, what is the magnitude of the current in the circuit?

Part B

At what time t after the switch is closed is the voltage across the capacitor 8.00 V?

Part C

When the voltage across the capacitor is 8.00 V, at what rate is energy being stored in the capacitor?

2. You connect a battery, resistor, and capacitor as in (Figure 1) , where R = 18.0 Ω and C = 9.00 × 10−6 F. The switch S is closed at t = 0. When the current in the circuit has magnitude 3.00 A, the charge on the capacitor is 40.0 × 10−6 C.

Part A

What is the emf of the battery?

Part B

At what time t after the switch is closed is the charge on the capacitor equal to 40.0 × 10−6 C?

Part C

When the current has magnitude 3.00 A, at what rate is energy being stored in the capacitor?

Part D

When the current has magnitude 3.00 A, at what rate is energy being supplied by the battery?

16. Although we have discussed single-slit diffraction only for a slit, a similar result holds when light bends around a straight, thin object, such as a strand of hair. In that case, a is the width of the strand. From actual laboratory measurements on a human hair, it was found that when a beam of light of wavelength 632.8 nm was shone on a single strand of hair, and the diffracted light was viewed on a screen 1.25 m away, the first dark fringes on either side of the central bright spot were 5.22 cm apart.How thick was the strand of hair in μm?

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