Astronomers use tiny wobbles of distant stars to detect the presence of planets orbiting those stars. this occurs because the star exerts a gravitational pull on the planet while the planet

Anybody wanna ? (picture included? )

What is a carrier wave and how does it affect what you hear on the radio

An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.