Which of the following policies might eliminate a disadvantage of renewable energy sources?

a. modernizing coal power plants

b. storing nuclear waste in carefully controlled facilities

c. subsidizing solar energy production to reduce the price

d. investing in technology that will reduce polluting emissions

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

You are to give ampicillin with a recommended dose of 25mg/kg to a child with a mass of 29kg. if stock on hand is 250mg/capsule how many capsules should be given?

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.