A child of mass 25kg sits on a merry-go-round. The child is seated 4m from the centre of the merry-go-round and period of the motion is 27.3s. Calculate:

a) the acceleration of the child

b) the centripetal force

A solid conducting sphere of radius 2.00 cm has a charge of 8.84 μC. A conducting spherical shell of inner radius 4.00 cm and outer radius 5.00 cm is concentric with the solid sphere and has a charge of - 2.02 μC.

Which substance will form a solution when mixed with solid sodium chloride

In which landscape region of new york is the most resistant bedrock found?

Why is my autistic sister closer. to a friend of ours than she is me?

True or false disturbances in the atmosphere create severe weather (changes in humidity, temperature, and air pressure).

What is the average speed in miles per hour of the car that traveled a total of 200 miles in 5.5 hours

A solid weighs 277.5 g in air and 212.5 g when totally immersed in the liquid of density 0.9 g / cc. Calculate the density of the solid.

Who first described the double-helix structure of DNA?

Suppose you are holding a basketball while standing still on a skateboard you are and the skateboard have a mass of 50 kg you throw the basketball with a force of 10 N what is your acceleration before and after you throw the ball

Which nitrogen base sequence is the partner of C-A-T-C-G-A? O C-A-T-C-G-A O G-T-A-G-C-T OT-G-C-T-A-G O G-C-A-T-G-T TI