A 20 C positive charge is held a distance x away from a stationary 10 C negative charge. The positive charge is released and accelerates toward the negative charge, attaining a velocity of 50 m/s when it reaches a distance of 0.5x from the 10 C charge. How far apart were the two particles initially?

After an atomic bomb has been dropped, the damage continues to get worse. why is this?

Infrared radiation has wavelengths that are shorter than visible light is part of the visible light spectrum has wavelengths that are longer than visible light has the same wavelengths as ultraviolet radiation

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.