Two tuning forks are generating sounds of wavelengths 34.4 cm and 33.94 cm. How many beats are produced each second by the two tuning forks? The speed of sound is 340 m/sec. A. 18

B. 22

C. 14

D. 27

On a geologic map, if the contacts between sedimentary rock units form a bull’s-eye pattern of concentric circles, with the youngest unit in the center, the underlying structure is a(n)

Kinetic energy depends a. mass b. speed (velocity) c. both of the above d. none of the above

An experiment was performed on a 2-kg block. forces of 5, 10 and 15 newtons respectively were applied to the block for 5 seconds. describe the difference in acceleration between the three trials. a) the final accelerations will all be the same. b) the final acceleration will triple between the first and third trial. c) the final acceleration will be cut by 1/3 from the first to third trial. d) the final acceleration will increase nine time between the first and third trial.