A glas block in air has a critical angle of 49 What would
happen to day of light coming through the glass when it is incident
at an angle of 50 at the glass-air boundary? Illustrate with
a diagram

Which is not true about oxygen-17 and oxygen-18?

While standing outdoors one evening, you are exposed to the following four types of electromagnetic radiation: yellow light from a sodium street lamp, radio waves from an am radio station, radio waves from an fm radio station, and microwaves from an antenna of a communications system. rank these type of waves in terms of increasing photon energy.

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?