What are the current problems with using nuclear power as a source of energy? Name one problem from fission and one for fusion.

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.