A 500. gram sample of nickle-63 has a half-life of 100. years and has decayed for 500. years. How much of the original 500. gram sample remains?

87.1 grams

574 grams

16,000 grams

15.6 grams

Felipe made a toy boat out of clay, but it kept sinking in water. He changed the boat's design by making it slightly wider than before. Why did Felipe's newly designed boat float on water?

A certain steam turbine is designed to be used as both a power generator and a pump. When used as a generator, the turbine provides enough power to do 3 * 10^10 J of work in 1 min. What is the power output of the turbine?

Compare and contrast what happens in a metal to what happens to a mass of water when each is heated

Experimental tests have shown that hammerhead sharks can detect magnetic fields. In one such test, 100 turns of wire were wrapped around a 7.0-m-diameter cylindrical shark tank.

What are the two measurements necessary for calculating average speed?

What career has to do with one of these listed ... fossil fuels, nuclear energy, biomass, hydropower, solar energy, geothermal energy, or wind energy.

An object is suspended from the ceiling with two wires that make an angle of 40° with the ceiling. The weight of the body is 150 N. What is the tension in each wire? 41.6 newtons 82.3 newtons 150 newtons 117 newtons

What is the value of 9682 when rounded to three significant figures

Why do atoms move at different speeds depending on wether they are liquids or solids

What are the arrangement of resistors in series