Kira flies her spaceship at 0.8 c, trying to catch up to her sister aja, who's spaceship is traveling at 0.5 c in the same direction. kira shines a laser towards aja's ship to signal her imminent arrival. what is the speed of the laser light as measured by aja? g

The magnitude of the amount of energy released by burning a fuel source, measured in energy per unit mass, is called its fuel value. note that the fuel value is the negative of the isobaric specific heat of combustion for the fuel. if all the energy obtained from burning 1.23 pounds of butane with a fuel value of 10.85 kcal/g is used to heat 128.0 kg of water at an initial temperature of 18.3 °c, what is the final temperature? note that 1 lb = 453.6 g.