What is the apparent magnitude of the brightest star in the Big Dipper?

It takes 4 hr 39 min for a 2.00-mg sample of radium-230 to decay to 0.25 mg. What is the half-life of radium-230? A) 1 hr 4 min B) 1 hr 17 min C) 1 hr 33 min D) 1 hr 49 min Eli

reddit One company sells a defibrillator for home use that uses a 9-volt DC battery. The battery is rated at 4.2 A•hr (amp•hour). Roughly how much charge can the battery deliver?

About how long ago did our solar system start to form?

Many scientists believe that the current period of global warming is related to increased levels of what?

Match the term to the correct description. options: -An object that slows down the flow of electric current but still allows some electric current to move, resulting in some of the energy being converted to heat (thermal energy) or light energy in

What is a limitation of a physical model & mathematical model?

What's is inductive reasoning?

The sun Why does mining often result in environment Pollution?

The men's world record for swimming 1500.0 m in a long course pool (as of 2007) is 14 min 34.56 s. At this rate, how many seconds would it take to swim 0.8500.850 miles (1 mi = 1609 m) ?

What is the acceleration of a 90 kg object which is acted upon by an unbalanced force of 435 N?