Thorium-229 is a highly radioactive isotope used in the treatment of certain cancers. use the chart to determine how much thorium would remain after 7,340 years if a sample began at 20 pounds of pure th-229.

What is the stall speed at sea level of an airplane that weights 10000 lbs., has a wing area of 300ft^2, and a maximum lift coefficient of 1.4? what is the stall speed if flaps that double cl, max are applied?

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?

What determines the amount of inertia an object has