[60] 比例比率题,如何应用公式 According to Einstein’s energy-mass equivalence equation, the energy of an object is proportional to its mass. If a silver dollar with a mass of 8.1 grams (g) has 7.29 x 10^14 joules (J) of energy, how much energy does a 1.7g gold dollar have? 根据爱因斯坦的质能等价公式(质能互换公式),物体的能量与其质量成正比。如果一个质量为8.1克(g)的银元有7.29 x 10^14焦耳(J)的能量,那么一个质量为1.7克的金元,有多少能量呢? Propotional 成正比例