An object moves in uniform circular motion at 50 m/s and takes 1.0 second to go a quarter circle. what is the radius of the circle?

r= m
a. 0.50 m
b. 8.0 m
c. 32 m
d. 78.5 m

15. give an example for some particles or waves that are moving faster than light in everyday life 16. what is a laser? 17. what is an oscilloscope? 18. what does it means practically that nothing is faster than light in vacuum? 19. what is vacuum?

Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.

What is the largest meteoroid that has collided with this planet