Use the following information to answer the next question. A neutral element X has 10 electrons and 12 neutrons in its atom. The atomic number of element X is a) 10 b) 12 c) 20 d) 22 ...
 A work of 4900j is done on road of mass 50 kg to lift it to a certain height. Calculate the height through which the load is lifted. a) 10 b) 20 c) 30 d) none ...
