A car changes its speed from 0 to 20 m/s in 4 seconds. What is the acceleration?

What type of light does this light bulb produce most (i.e. at what wavelength does the spectrum have maximum intensity)?

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?

Both independent and dependent clauses