A loudspeaker in a parked car is producing sound whose frequency is 20 510 Hz. A healthy young person with normal hearing is standing nearby on the sidewalk but cannot hear the sound because the frequency is too high. When the car is moving, however, this person can hear the sound. (a) Is the car moving toward or away from the person? Why? (b) If the speed of sound is 343 m/s, what is the minimum speed of the moving car?
Physics 272 Week 2 Notes • Introductory Notes: o 1 Angstrom (Å) = 10 -10= about the size of one atom o An electric field exists everywhere but at its own origin o An Eclectic field looks the same close as it does far away • Sphere With a Charge: o E spherehen r < R is 0 (inside the sphere) o E total sum of all charges • Electric Dipole o Shape of a Dipole: ▪ Efield on Axis3̂ ▪ EField in Bisecting Plane 3 ▪ q = charge ▪ s = distance between charges • Conservation of Charge: o You can move charge in system to its surroundings o You can create charg
