What is part of the fourth stage in the process of technological design?

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?

Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion

You hang a book bag on a spring scale and place the bag on a platform scale so that the platform scale reads 23.7n and the spring scale reads 13.8n. what is the magnitude of the force that earth exerts on the bag?