An astronaut moves away from earth at close to the speed of light. as measured by an observer on earth, the pulse of the astronaut will be:.

Your town is considering building a biodiesel power plant describe at least two advantages and two disadvantages

Why does the equilibrium position of the spring change when a mass is added to the spring? will the mass oscillate around the new equilibrium position of the spring or the previous position without a mass attached to the spring? if the equilibrium position of the spring changes by 20 cm (assuming no initial mass) when a mass is added to the spring with constant 4.9 kg/s^2, what is the mass of the object attached to the spring?

What practical value did astronomy offer to ancient civilizations?