What is the expected fuel consumption for a 500-nautical mile flight under the following conditions? pressure altitude 4,000 ft temperature + 29°c manifold pressure 21.3" hg wind calm

Positrons are spontaneously emitted from the nuclei of

What sort of waves exhibit the doppler effect?

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?