An atom with 4 protons, 5 neutrons, and 4 electrons has an atomic mass of amu. (enter a whole number.) someone

Solar energy is energy from the sun that is converted into thermal or energy. a. nuclear b. mechanical c. electrical d. chemical

In which of these cases are the two wave points considered to be in phase with each other?

Aradio signal from a gps satellite take only about 0.067 seconds to reach a gps reciever. if the speed of light is about 300,000km/s, then approximately how far away is the reciever from from the satellite?