Please answer all

B. A car goes around a curve travelling at constant speed. Is the centripetal acceleration of the car zero in this process? provide on A. Yes because the speed of the car is constant rated for fi B. Yes because the speed of the car is not changing C. No because the speed of the car doesn't change D. No because the direction of the car is changing 9. Electromagnetic waves A. are transverse B. are produced by vibrating charges C. do not require a physical medium for wave propagation D. travel at 3x108 m/s E. all of the above 10. All waves exhibit the following behaviors: A. interference B. refraction C. doppler effect diffraction F . all of the above 1 1. Waves that move the particles of the medium parallel to the direction in which the waves are traveling are called A. longitudinal waves B. transverse waves C. surface waves D. none of the above 12. The energy of a wave is related to the wave's A. period B. wavelength C. speed D. amplitude E. none of the above 13. Calculate the weight of a person with a mass of 65 kg on the surface of the earth. A. 688 N B. 637 N C. 639 N D. 633N E. none of the above