A boy on a bicycle approaches a brick wall as he sounds his horn at a frequency 400.00 Hz. The sound he hears reflected back from the wall is at a frequency 408.00 Hz
At what is the speed is the boy riding his bicycle toward the wall? Assume the speed of sound in air is 340 m/s. A) 3.68 m/s
B) 333 m/s
C) 6.67 m/s
D) 6.80 m/s
E) 3.37 m/s
E
You might also like to view...
Suppose that a batter hits a foul ball almost exactly vertically in the air. As the ball rises, the magnitude of the torque that the gravitational interaction exerts on the ball around the pitcher:
A. Increases B. Decreases C. Remains roughly constant
At approximately what time does the third quarter Moon rise?
a) 9pm b) 6pm c) noon d) 6am e) midnight
A cohesive aggregate of one or more minerals is called a
a. crystal. b. gem. c. silicate. d. rock.
A 17 mm wide diffraction grating has rulings of 530 lines per mm. Light is incident normally on the grating. The longest wavelength that forms an intensity maximum in the fifth order is closest to:
A) 377 nm B) 352 nm C) 402 nm D) 427 nm E) 452 nm