True or false MRI scans, X rays, and tomography help doctors see bones inside a persons body?

The respiratory system removes oxygen and water from the body. select the best answer from the choices provided t f

Polly is pushing a box across the floor with a force of 30 n. the force of gravity is –8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?

Which is not an example of how an object gains elastic potential energy by stretching? a. jumping on a pogo stick b. pulling on a rubber band c. jumping on a trampoline