A ball that has a mass of 0.25 kg spins in a circle at the end of a 1.6m rope. The ball moves at tangential speed of 12.2m/s. What is centripetal force acting on the ball?

Brian's school locker has a three-digit combination lock that can be set using the numbers 5 to 9 (including 5 and 9), without repeating a number. the probability that the locker code begins with a prime number is %. the probability that the last digit of the locker code is an odd number is %.

Afootpath is to be constructed in a park in the shape of a parallelogram. when a coordinate plane is laid over a map of the park, the vertices of the footpath are (-4,2) (8,2) (11,7) and (-1,7). what is the perimeter of this path

East asia’s is dominated by dry highlands and grasslands. a. north and east c. north and west b. south and east d. south and west