HELPP ME PLZ 12. Which of the following scenarios will result in work NOT being done?

a. A robot lifts a ball above its head.

b. A person pushes a box along the ground.

c. A waiter carries a tray of food across a restaurant.

d. A basketball player shoots a three-pointer.

The force will determine the acceleration.

Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c

Give me a example of a decomposer. explain what would happen if decomposers were absent from a forest ecosystem