1 point What is the speed of a wave that has a frequency of 200 Hz and a
wavelength of 2 meters? Express your answer to the nearest whole
number. (wave speed = wavelength * frequency) *
400 m/s
100 m/s
0.01 m/s

What is the radius of the circular path ofa charged particle in a magnetic field?

What changes occur in the brain during the teenage years? 25 points, someone me out!a.) thinking becomes slower as the brain grows larger. b.) connections between neurons become stronger and faster. c.) unused neurons fuse together to form larger, better functioning neurons. d.) more neurons are developed.

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply