Calcula el calor necesario para que 400 gramos de plata eleven su temperatura de 15°c a 95°c si su calor especifico es de 0.056 cal /g°c

The energy equivalent of the rest mass of an electron is

Scientists follow specific processes in order to determine valid explanations and conclusions from observations. david observed strange lights in the sky above his home outside of roswell, new mexico. the only explanation that makes sense to him is that there are ufos in the area. what should david do next to verify his explanation?

If a star is moving toward earth, it is