A S The electric field shown is produced by a single point charge at the center

Question

A S The electric field shown is produced by a single point charge at the center of the picture Name: 41. If he 42. I 43. 36. What type of charge produces the electric field shown? a. positive b. negative c. neutral d. impossible to tell 37. If a new negative point charge is placed at location B directly above the one pictured, the force on it will a. be zero b. push it upward c. push it downward d. be in an unknown direction 38. Two sound waves traveling through the air have different frequencies. Consequently, they must also have different a amplitudes b. speeds c. wavelengths d. all of the above Two speakers in a stereo emit identical pure tones. As you move around in front of the hear the sound alternating between loud and zero. This occurs because of a. interference b. changing sound level c. diffraction d. the Doppler effect e 39. speakers, you theDppler efet e strock of 220 Hz. The speed of a wave on the waves 40. A cello string 0.75 m long has a string is a. 165 m/s b. 220 mls c. 294 mls e. none of these

Explanation / Answer

36]a) positive as it points away from particle.

37]c) because oppositive charges attract.

38]c) since frequency is different and speed in air is same, wavelength will differ.

39]a) interference

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