A student studies four chemicals in a laboratory investigation. Which chemical cannot be further broken down into other chemicals using ordinary laboratory processes?

What is the role of lenses in microscopy?

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?

Awave with a frequency of 500 hz is traveling at a speed of 100 m/s.what is the wavelength?